388767340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{20483}}^1$

素因数の和:20578

約数の個数: 48

約数和(自身を含む): 891299808

約数和(自身を除く): 502532468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3796, 4745, 9490, 18980, 20483, 40966, 81932, 102415, 204830, 266279, 409660, 532558, 1065116, 1331395, 1495259, 2662790, 2990518, 5325580, 5981036, 7476295, 14952590, 19438367, 29905180, 38876734, 77753468, 97191835, 194383670, 388767340]

約数ペア:

[(1, 388767340), (2, 194383670), (4, 97191835), (5, 77753468), (10, 38876734), (13, 29905180), (20, 19438367), (26, 14952590), (52, 7476295), (65, 5981036), (73, 5325580), (130, 2990518), (146, 2662790), (260, 1495259), (292, 1331395), (365, 1065116), (730, 532558), (949, 409660), (1460, 266279), (1898, 204830), (3796, 102415), (4745, 81932), (9490, 40966), (18980, 20483)]