18531800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 52585920

約数和(自身を除く): 34054120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 49, 50, 56, 61, 62, 70, 98, 100, 122, 124, 140, 155, 175, 196, 200, 217, 244, 245, 248, 280, 305, 310, 350, 392, 427, 434, 488, 490, 610, 620, 700, 775, 854, 868, 980, 1085, 1220, 1225, 1240, 1400, 1519, 1525, 1550, 1708, 1736, 1891, 1960, 2135, 2170, 2440, 2450, 2989, 3038, 3050, 3100, 3416, 3782, 4270, 4340, 4900, 5425, 5978, 6076, 6100, 6200, 7564, 7595, 8540, 8680, 9455, 9800, 10675, 10850, 11956, 12152, 12200, 13237, 14945, 15128, 15190, 17080, 18910, 21350, 21700, 23912, 26474, 29890, 30380, 37820, 37975, 42700, 43400, 47275, 52948, 59780, 60760, 66185, 74725, 75640, 75950, 85400, 92659, 94550, 105896, 119560, 132370, 149450, 151900, 185318, 189100, 264740, 298900, 303800, 330925, 370636, 378200, 463295, 529480, 597800, 661850, 741272, 926590, 1323700, 1853180, 2316475, 2647400, 3706360, 4632950, 9265900, 18531800]

約数ペア:

[(1, 18531800), (2, 9265900), (4, 4632950), (5, 3706360), (7, 2647400), (8, 2316475), (10, 1853180), (14, 1323700), (20, 926590), (25, 741272), (28, 661850), (31, 597800), (35, 529480), (40, 463295), (49, 378200), (50, 370636), (56, 330925), (61, 303800), (62, 298900), (70, 264740), (98, 189100), (100, 185318), (122, 151900), (124, 149450), (140, 132370), (155, 119560), (175, 105896), (196, 94550), (200, 92659), (217, 85400), (244, 75950), (245, 75640), (248, 74725), (280, 66185), (305, 60760), (310, 59780), (350, 52948), (392, 47275), (427, 43400), (434, 42700), (488, 37975), (490, 37820), (610, 30380), (620, 29890), (700, 26474), (775, 23912), (854, 21700), (868, 21350), (980, 18910), (1085, 17080), (1220, 15190), (1225, 15128), (1240, 14945), (1400, 13237), (1519, 12200), (1525, 12152), (1550, 11956), (1708, 10850), (1736, 10675), (1891, 9800), (1960, 9455), (2135, 8680), (2170, 8540), (2440, 7595), (2450, 7564), (2989, 6200), (3038, 6100), (3050, 6076), (3100, 5978), (3416, 5425), (3782, 4900), (4270, 4340)]