490261840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{1861}}^1$

素因数の和:2000

約数の個数: 80

約数和(自身を含む): 1184455440

約数和(自身を除く): 694193600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 89, 148, 178, 185, 296, 356, 370, 445, 592, 712, 740, 890, 1424, 1480, 1780, 1861, 2960, 3293, 3560, 3722, 6586, 7120, 7444, 9305, 13172, 14888, 16465, 18610, 26344, 29776, 32930, 37220, 52688, 65860, 68857, 74440, 131720, 137714, 148880, 165629, 263440, 275428, 331258, 344285, 550856, 662516, 688570, 828145, 1101712, 1325032, 1377140, 1656290, 2650064, 2754280, 3312580, 5508560, 6128273, 6625160, 12256546, 13250320, 24513092, 30641365, 49026184, 61282730, 98052368, 122565460, 245130920, 490261840]

約数ペア:

[(1, 490261840), (2, 245130920), (4, 122565460), (5, 98052368), (8, 61282730), (10, 49026184), (16, 30641365), (20, 24513092), (37, 13250320), (40, 12256546), (74, 6625160), (80, 6128273), (89, 5508560), (148, 3312580), (178, 2754280), (185, 2650064), (296, 1656290), (356, 1377140), (370, 1325032), (445, 1101712), (592, 828145), (712, 688570), (740, 662516), (890, 550856), (1424, 344285), (1480, 331258), (1780, 275428), (1861, 263440), (2960, 165629), (3293, 148880), (3560, 137714), (3722, 131720), (6586, 74440), (7120, 68857), (7444, 65860), (9305, 52688), (13172, 37220), (14888, 32930), (16465, 29776), (18610, 26344)]