398808800

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1301

約数の個数: 144

約数和(自身を含む): 1083180672

約数和(自身を除く): 684371872

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 325, 400, 403, 416, 496, 520, 620, 650, 775, 800, 806, 992, 1040, 1237, 1240, 1300, 1550, 1612, 2015, 2080, 2474, 2480, 2600, 3100, 3224, 4030, 4948, 4960, 5200, 6185, 6200, 6448, 8060, 9896, 10075, 10400, 12370, 12400, 12896, 16081, 16120, 19792, 20150, 24740, 24800, 30925, 32162, 32240, 38347, 39584, 40300, 49480, 61850, 64324, 64480, 76694, 80405, 80600, 98960, 123700, 128648, 153388, 160810, 161200, 191735, 197920, 247400, 257296, 306776, 321620, 322400, 383470, 402025, 494800, 498511, 514592, 613552, 643240, 766940, 804050, 958675, 989600, 997022, 1227104, 1286480, 1533880, 1608100, 1917350, 1994044, 2492555, 2572960, 3067760, 3216200, 3834700, 3988088, 4985110, 6135520, 6432400, 7669400, 7976176, 9970220, 12462775, 12864800, 15338800, 15952352, 19940440, 24925550, 30677600, 39880880, 49851100, 79761760, 99702200, 199404400, 398808800]

約数ペア:

[(1, 398808800), (2, 199404400), (4, 99702200), (5, 79761760), (8, 49851100), (10, 39880880), (13, 30677600), (16, 24925550), (20, 19940440), (25, 15952352), (26, 15338800), (31, 12864800), (32, 12462775), (40, 9970220), (50, 7976176), (52, 7669400), (62, 6432400), (65, 6135520), (80, 4985110), (100, 3988088), (104, 3834700), (124, 3216200), (130, 3067760), (155, 2572960), (160, 2492555), (200, 1994044), (208, 1917350), (248, 1608100), (260, 1533880), (310, 1286480), (325, 1227104), (400, 997022), (403, 989600), (416, 958675), (496, 804050), (520, 766940), (620, 643240), (650, 613552), (775, 514592), (800, 498511), (806, 494800), (992, 402025), (1040, 383470), (1237, 322400), (1240, 321620), (1300, 306776), (1550, 257296), (1612, 247400), (2015, 197920), (2080, 191735), (2474, 161200), (2480, 160810), (2600, 153388), (3100, 128648), (3224, 123700), (4030, 98960), (4948, 80600), (4960, 80405), (5200, 76694), (6185, 64480), (6200, 64324), (6448, 61850), (8060, 49480), (9896, 40300), (10075, 39584), (10400, 38347), (12370, 32240), (12400, 32162), (12896, 30925), (16081, 24800), (16120, 24740), (19792, 20150)]