19428500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:107

約数の個数: 144

約数和(自身を含む): 54027792

約数和(自身を除く): 34599292

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 61, 65, 70, 91, 98, 100, 122, 125, 130, 140, 175, 182, 196, 244, 245, 250, 260, 305, 325, 350, 364, 427, 455, 490, 500, 610, 637, 650, 700, 793, 854, 875, 910, 980, 1220, 1225, 1274, 1300, 1525, 1586, 1625, 1708, 1750, 1820, 2135, 2275, 2450, 2548, 2989, 3050, 3172, 3185, 3250, 3500, 3965, 4270, 4550, 4900, 5551, 5978, 6100, 6125, 6370, 6500, 7625, 7930, 8540, 9100, 10675, 11102, 11375, 11956, 12250, 12740, 14945, 15250, 15860, 15925, 19825, 21350, 22204, 22750, 24500, 27755, 29890, 30500, 31850, 38857, 39650, 42700, 45500, 53375, 55510, 59780, 63700, 74725, 77714, 79300, 79625, 99125, 106750, 111020, 138775, 149450, 155428, 159250, 194285, 198250, 213500, 277550, 298900, 318500, 373625, 388570, 396500, 555100, 693875, 747250, 777140, 971425, 1387750, 1494500, 1942850, 2775500, 3885700, 4857125, 9714250, 19428500]

約数ペア:

[(1, 19428500), (2, 9714250), (4, 4857125), (5, 3885700), (7, 2775500), (10, 1942850), (13, 1494500), (14, 1387750), (20, 971425), (25, 777140), (26, 747250), (28, 693875), (35, 555100), (49, 396500), (50, 388570), (52, 373625), (61, 318500), (65, 298900), (70, 277550), (91, 213500), (98, 198250), (100, 194285), (122, 159250), (125, 155428), (130, 149450), (140, 138775), (175, 111020), (182, 106750), (196, 99125), (244, 79625), (245, 79300), (250, 77714), (260, 74725), (305, 63700), (325, 59780), (350, 55510), (364, 53375), (427, 45500), (455, 42700), (490, 39650), (500, 38857), (610, 31850), (637, 30500), (650, 29890), (700, 27755), (793, 24500), (854, 22750), (875, 22204), (910, 21350), (980, 19825), (1220, 15925), (1225, 15860), (1274, 15250), (1300, 14945), (1525, 12740), (1586, 12250), (1625, 11956), (1708, 11375), (1750, 11102), (1820, 10675), (2135, 9100), (2275, 8540), (2450, 7930), (2548, 7625), (2989, 6500), (3050, 6370), (3172, 6125), (3185, 6100), (3250, 5978), (3500, 5551), (3965, 4900), (4270, 4550)]