40664620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 88524576

約数和(自身を除く): 47859956

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 101, 164, 202, 205, 404, 410, 491, 505, 820, 982, 1010, 1964, 2020, 2455, 4141, 4910, 8282, 9820, 16564, 20131, 20705, 40262, 41410, 49591, 80524, 82820, 99182, 100655, 198364, 201310, 247955, 402620, 495910, 991820, 2033231, 4066462, 8132924, 10166155, 20332310, 40664620]

約数ペア:

[(1, 40664620), (2, 20332310), (4, 10166155), (5, 8132924), (10, 4066462), (20, 2033231), (41, 991820), (82, 495910), (101, 402620), (164, 247955), (202, 201310), (205, 198364), (404, 100655), (410, 99182), (491, 82820), (505, 80524), (820, 49591), (982, 41410), (1010, 40262), (1964, 20705), (2020, 20131), (2455, 16564), (4141, 9820), (4910, 8282)]