128523980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{26017}}^1$

素因数の和:26058

約数の個数: 48

約数和(自身を含む): 305971680

約数和(自身を除く): 177447700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 26017, 52034, 104068, 130085, 260170, 338221, 494323, 520340, 676442, 988646, 1352884, 1691105, 1977292, 2471615, 3382210, 4943230, 6426199, 6764420, 9886460, 12852398, 25704796, 32130995, 64261990, 128523980]

約数ペア:

[(1, 128523980), (2, 64261990), (4, 32130995), (5, 25704796), (10, 12852398), (13, 9886460), (19, 6764420), (20, 6426199), (26, 4943230), (38, 3382210), (52, 2471615), (65, 1977292), (76, 1691105), (95, 1352884), (130, 988646), (190, 676442), (247, 520340), (260, 494323), (380, 338221), (494, 260170), (988, 130085), (1235, 104068), (2470, 52034), (4940, 26017)]