258416000

素因数分解:

$2^7\times 5^3\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:581

約数の個数: 128

約数和(自身を含む): 664485120

約数和(自身を除く): 406069120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 248, 250, 310, 320, 400, 496, 500, 521, 620, 640, 775, 800, 992, 1000, 1042, 1240, 1550, 1600, 1984, 2000, 2084, 2480, 2605, 3100, 3200, 3875, 3968, 4000, 4168, 4960, 5210, 6200, 7750, 8000, 8336, 9920, 10420, 12400, 13025, 15500, 16000, 16151, 16672, 19840, 20840, 24800, 26050, 31000, 32302, 33344, 41680, 49600, 52100, 62000, 64604, 65125, 66688, 80755, 83360, 99200, 104200, 124000, 129208, 130250, 161510, 166720, 208400, 248000, 258416, 260500, 323020, 333440, 403775, 416800, 496000, 516832, 521000, 646040, 807550, 833600, 1033664, 1042000, 1292080, 1615100, 1667200, 2018875, 2067328, 2084000, 2584160, 3230200, 4037750, 4168000, 5168320, 6460400, 8075500, 8336000, 10336640, 12920800, 16151000, 25841600, 32302000, 51683200, 64604000, 129208000, 258416000]

約数ペア:

[(1, 258416000), (2, 129208000), (4, 64604000), (5, 51683200), (8, 32302000), (10, 25841600), (16, 16151000), (20, 12920800), (25, 10336640), (31, 8336000), (32, 8075500), (40, 6460400), (50, 5168320), (62, 4168000), (64, 4037750), (80, 3230200), (100, 2584160), (124, 2084000), (125, 2067328), (128, 2018875), (155, 1667200), (160, 1615100), (200, 1292080), (248, 1042000), (250, 1033664), (310, 833600), (320, 807550), (400, 646040), (496, 521000), (500, 516832), (521, 496000), (620, 416800), (640, 403775), (775, 333440), (800, 323020), (992, 260500), (1000, 258416), (1042, 248000), (1240, 208400), (1550, 166720), (1600, 161510), (1984, 130250), (2000, 129208), (2084, 124000), (2480, 104200), (2605, 99200), (3100, 83360), (3200, 80755), (3875, 66688), (3968, 65125), (4000, 64604), (4168, 62000), (4960, 52100), (5210, 49600), (6200, 41680), (7750, 33344), (8000, 32302), (8336, 31000), (9920, 26050), (10420, 24800), (12400, 20840), (13025, 19840), (15500, 16672), (16000, 16151)]