21110520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 47318280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 47, 57, 60, 76, 94, 95, 114, 120, 141, 152, 188, 190, 197, 228, 235, 282, 285, 376, 380, 394, 456, 470, 564, 570, 591, 705, 760, 788, 893, 940, 985, 1128, 1140, 1182, 1410, 1576, 1786, 1880, 1970, 2280, 2364, 2679, 2820, 2955, 3572, 3743, 3940, 4465, 4728, 5358, 5640, 5910, 7144, 7486, 7880, 8930, 9259, 10716, 11229, 11820, 13395, 14972, 17860, 18518, 18715, 21432, 22458, 23640, 26790, 27777, 29944, 35720, 37036, 37430, 44916, 46295, 53580, 55554, 56145, 74072, 74860, 89832, 92590, 107160, 111108, 112290, 138885, 149720, 175921, 185180, 222216, 224580, 277770, 351842, 370360, 449160, 527763, 555540, 703684, 879605, 1055526, 1111080, 1407368, 1759210, 2111052, 2638815, 3518420, 4222104, 5277630, 7036840, 10555260, 21110520]

約数ペア:

[(1, 21110520), (2, 10555260), (3, 7036840), (4, 5277630), (5, 4222104), (6, 3518420), (8, 2638815), (10, 2111052), (12, 1759210), (15, 1407368), (19, 1111080), (20, 1055526), (24, 879605), (30, 703684), (38, 555540), (40, 527763), (47, 449160), (57, 370360), (60, 351842), (76, 277770), (94, 224580), (95, 222216), (114, 185180), (120, 175921), (141, 149720), (152, 138885), (188, 112290), (190, 111108), (197, 107160), (228, 92590), (235, 89832), (282, 74860), (285, 74072), (376, 56145), (380, 55554), (394, 53580), (456, 46295), (470, 44916), (564, 37430), (570, 37036), (591, 35720), (705, 29944), (760, 27777), (788, 26790), (893, 23640), (940, 22458), (985, 21432), (1128, 18715), (1140, 18518), (1182, 17860), (1410, 14972), (1576, 13395), (1786, 11820), (1880, 11229), (1970, 10716), (2280, 9259), (2364, 8930), (2679, 7880), (2820, 7486), (2955, 7144), (3572, 5910), (3743, 5640), (3940, 5358), (4465, 4728)]