20897100

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:165

約数の個数: 216

約数和(自身を含む): 77995008

約数和(自身を除く): 57097908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 31, 35, 36, 42, 45, 50, 60, 62, 63, 70, 75, 84, 90, 93, 100, 105, 107, 124, 126, 140, 150, 155, 175, 180, 186, 210, 214, 217, 225, 252, 279, 300, 310, 315, 321, 350, 372, 420, 428, 434, 450, 465, 525, 535, 558, 620, 630, 642, 651, 700, 749, 775, 868, 900, 930, 963, 1050, 1070, 1085, 1116, 1260, 1284, 1302, 1395, 1498, 1550, 1575, 1605, 1860, 1926, 1953, 2100, 2140, 2170, 2247, 2325, 2604, 2675, 2790, 2996, 3100, 3150, 3210, 3255, 3317, 3745, 3852, 3906, 4340, 4494, 4650, 4815, 5350, 5425, 5580, 6300, 6420, 6510, 6634, 6741, 6975, 7490, 7812, 8025, 8988, 9300, 9630, 9765, 9951, 10700, 10850, 11235, 13020, 13268, 13482, 13950, 14980, 16050, 16275, 16585, 18725, 19260, 19530, 19902, 21700, 22470, 23219, 24075, 26964, 27900, 29853, 32100, 32550, 33170, 33705, 37450, 39060, 39804, 44940, 46438, 48150, 48825, 49755, 56175, 59706, 65100, 66340, 67410, 69657, 74900, 82925, 92876, 96300, 97650, 99510, 112350, 116095, 119412, 134820, 139314, 149265, 165850, 168525, 195300, 199020, 208971, 224700, 232190, 248775, 278628, 298530, 331700, 337050, 348285, 417942, 464380, 497550, 580475, 597060, 674100, 696570, 746325, 835884, 995100, 1044855, 1160950, 1393140, 1492650, 1741425, 2089710, 2321900, 2985300, 3482850, 4179420, 5224275, 6965700, 10448550, 20897100]

約数ペア:

[(1, 20897100), (2, 10448550), (3, 6965700), (4, 5224275), (5, 4179420), (6, 3482850), (7, 2985300), (9, 2321900), (10, 2089710), (12, 1741425), (14, 1492650), (15, 1393140), (18, 1160950), (20, 1044855), (21, 995100), (25, 835884), (28, 746325), (30, 696570), (31, 674100), (35, 597060), (36, 580475), (42, 497550), (45, 464380), (50, 417942), (60, 348285), (62, 337050), (63, 331700), (70, 298530), (75, 278628), (84, 248775), (90, 232190), (93, 224700), (100, 208971), (105, 199020), (107, 195300), (124, 168525), (126, 165850), (140, 149265), (150, 139314), (155, 134820), (175, 119412), (180, 116095), (186, 112350), (210, 99510), (214, 97650), (217, 96300), (225, 92876), (252, 82925), (279, 74900), (300, 69657), (310, 67410), (315, 66340), (321, 65100), (350, 59706), (372, 56175), (420, 49755), (428, 48825), (434, 48150), (450, 46438), (465, 44940), (525, 39804), (535, 39060), (558, 37450), (620, 33705), (630, 33170), (642, 32550), (651, 32100), (700, 29853), (749, 27900), (775, 26964), (868, 24075), (900, 23219), (930, 22470), (963, 21700), (1050, 19902), (1070, 19530), (1085, 19260), (1116, 18725), (1260, 16585), (1284, 16275), (1302, 16050), (1395, 14980), (1498, 13950), (1550, 13482), (1575, 13268), (1605, 13020), (1860, 11235), (1926, 10850), (1953, 10700), (2100, 9951), (2140, 9765), (2170, 9630), (2247, 9300), (2325, 8988), (2604, 8025), (2675, 7812), (2790, 7490), (2996, 6975), (3100, 6741), (3150, 6634), (3210, 6510), (3255, 6420), (3317, 6300), (3745, 5580), (3852, 5425), (3906, 5350), (4340, 4815), (4494, 4650)]