1640600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{631}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 4114320

約数和(自身を除く): 2473720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 631, 650, 1262, 1300, 2524, 2600, 3155, 5048, 6310, 8203, 12620, 15775, 16406, 25240, 31550, 32812, 41015, 63100, 65624, 82030, 126200, 164060, 205075, 328120, 410150, 820300, 1640600]

約数ペア:

[(1, 1640600), (2, 820300), (4, 410150), (5, 328120), (8, 205075), (10, 164060), (13, 126200), (20, 82030), (25, 65624), (26, 63100), (40, 41015), (50, 32812), (52, 31550), (65, 25240), (100, 16406), (104, 15775), (130, 12620), (200, 8203), (260, 6310), (325, 5048), (520, 3155), (631, 2600), (650, 2524), (1262, 1300)]