20761420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{269}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 25777940

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 227, 269, 340, 454, 538, 908, 1076, 1135, 1345, 2270, 2690, 3859, 4540, 4573, 5380, 7718, 9146, 15436, 18292, 19295, 22865, 38590, 45730, 61063, 77180, 91460, 122126, 244252, 305315, 610630, 1038071, 1221260, 2076142, 4152284, 5190355, 10380710, 20761420]

約数ペア:

[(1, 20761420), (2, 10380710), (4, 5190355), (5, 4152284), (10, 2076142), (17, 1221260), (20, 1038071), (34, 610630), (68, 305315), (85, 244252), (170, 122126), (227, 91460), (269, 77180), (340, 61063), (454, 45730), (538, 38590), (908, 22865), (1076, 19295), (1135, 18292), (1345, 15436), (2270, 9146), (2690, 7718), (3859, 5380), (4540, 4573)]