208780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:106

約数の個数: 48

約数和(自身を含む): 522144

約数和(自身を除く): 313364

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 73, 110, 130, 143, 146, 220, 260, 286, 292, 365, 572, 715, 730, 803, 949, 1430, 1460, 1606, 1898, 2860, 3212, 3796, 4015, 4745, 8030, 9490, 10439, 16060, 18980, 20878, 41756, 52195, 104390, 208780]

約数ペア:

[(1, 208780), (2, 104390), (4, 52195), (5, 41756), (10, 20878), (11, 18980), (13, 16060), (20, 10439), (22, 9490), (26, 8030), (44, 4745), (52, 4015), (55, 3796), (65, 3212), (73, 2860), (110, 1898), (130, 1606), (143, 1460), (146, 1430), (220, 949), (260, 803), (286, 730), (292, 715), (365, 572)]