998140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 2469600

約数和(自身を除く): 1471460

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 349, 572, 698, 715, 1396, 1430, 1745, 2860, 3490, 3839, 4537, 6980, 7678, 9074, 15356, 18148, 19195, 22685, 38390, 45370, 49907, 76780, 90740, 99814, 199628, 249535, 499070, 998140]

約数ペア:

[(1, 998140), (2, 499070), (4, 249535), (5, 199628), (10, 99814), (11, 90740), (13, 76780), (20, 49907), (22, 45370), (26, 38390), (44, 22685), (52, 19195), (55, 18148), (65, 15356), (110, 9074), (130, 7678), (143, 6980), (220, 4537), (260, 3839), (286, 3490), (349, 2860), (572, 1745), (698, 1430), (715, 1396)]