388640460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{498257}}^1$

素因数の和:498282

約数の個数: 48

約数和(自身を含む): 1171902816

約数和(自身を除く): 783262356

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 498257, 996514, 1494771, 1993028, 2491285, 2989542, 4982570, 5979084, 6477341, 7473855, 9965140, 12954682, 14947710, 19432023, 25909364, 29895420, 32386705, 38864046, 64773410, 77728092, 97160115, 129546820, 194320230, 388640460]

約数ペア:

[(1, 388640460), (2, 194320230), (3, 129546820), (4, 97160115), (5, 77728092), (6, 64773410), (10, 38864046), (12, 32386705), (13, 29895420), (15, 25909364), (20, 19432023), (26, 14947710), (30, 12954682), (39, 9965140), (52, 7473855), (60, 6477341), (65, 5979084), (78, 4982570), (130, 2989542), (156, 2491285), (195, 1993028), (260, 1494771), (390, 996514), (780, 498257)]