198589040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{743}}^1$

素因数の和:1026

約数の個数: 80

約数和(自身を含む): 499843008

約数和(自身を除く): 301253968

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 257, 260, 514, 520, 743, 1028, 1040, 1285, 1486, 2056, 2570, 2972, 3341, 3715, 4112, 5140, 5944, 6682, 7430, 9659, 10280, 11888, 13364, 14860, 16705, 19318, 20560, 26728, 29720, 33410, 38636, 48295, 53456, 59440, 66820, 77272, 96590, 133640, 154544, 190951, 193180, 267280, 381902, 386360, 763804, 772720, 954755, 1527608, 1909510, 2482363, 3055216, 3819020, 4964726, 7638040, 9929452, 12411815, 15276080, 19858904, 24823630, 39717808, 49647260, 99294520, 198589040]

約数ペア:

[(1, 198589040), (2, 99294520), (4, 49647260), (5, 39717808), (8, 24823630), (10, 19858904), (13, 15276080), (16, 12411815), (20, 9929452), (26, 7638040), (40, 4964726), (52, 3819020), (65, 3055216), (80, 2482363), (104, 1909510), (130, 1527608), (208, 954755), (257, 772720), (260, 763804), (514, 386360), (520, 381902), (743, 267280), (1028, 193180), (1040, 190951), (1285, 154544), (1486, 133640), (2056, 96590), (2570, 77272), (2972, 66820), (3341, 59440), (3715, 53456), (4112, 48295), (5140, 38636), (5944, 33410), (6682, 29720), (7430, 26728), (9659, 20560), (10280, 19318), (11888, 16705), (13364, 14860)]