638385280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^2$

素因数の和:586

約数の個数: 96

約数和(自身を含む): 1649489940

約数和(自身を除く): 1011104660

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 277, 320, 416, 520, 554, 640, 832, 1040, 1108, 1385, 1664, 2080, 2216, 2770, 3601, 4160, 4432, 5540, 7202, 8320, 8864, 11080, 14404, 17728, 18005, 22160, 28808, 35456, 36010, 44320, 57616, 72020, 76729, 88640, 115232, 144040, 153458, 177280, 230464, 288080, 306916, 383645, 460928, 576160, 613832, 767290, 997477, 1152320, 1227664, 1534580, 1994954, 2304640, 2455328, 3069160, 3989908, 4910656, 4987385, 6138320, 7979816, 9821312, 9974770, 12276640, 15959632, 19949540, 24553280, 31919264, 39899080, 49106560, 63838528, 79798160, 127677056, 159596320, 319192640, 638385280]

約数ペア:

[(1, 638385280), (2, 319192640), (4, 159596320), (5, 127677056), (8, 79798160), (10, 63838528), (13, 49106560), (16, 39899080), (20, 31919264), (26, 24553280), (32, 19949540), (40, 15959632), (52, 12276640), (64, 9974770), (65, 9821312), (80, 7979816), (104, 6138320), (128, 4987385), (130, 4910656), (160, 3989908), (208, 3069160), (260, 2455328), (277, 2304640), (320, 1994954), (416, 1534580), (520, 1227664), (554, 1152320), (640, 997477), (832, 767290), (1040, 613832), (1108, 576160), (1385, 460928), (1664, 383645), (2080, 306916), (2216, 288080), (2770, 230464), (3601, 177280), (4160, 153458), (4432, 144040), (5540, 115232), (7202, 88640), (8320, 76729), (8864, 72020), (11080, 57616), (14404, 44320), (17728, 36010), (18005, 35456), (22160, 28808)]