64321720

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{9629}}^1$

素因数の和:9807

約数の個数: 32

約数和(自身を含む): 145605600

約数和(自身を除く): 81283880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 9629, 19258, 38516, 48145, 77032, 96290, 192580, 385160, 1608043, 3216086, 6432172, 8040215, 12864344, 16080430, 32160860, 64321720]

約数ペア:

[(1, 64321720), (2, 32160860), (4, 16080430), (5, 12864344), (8, 8040215), (10, 6432172), (20, 3216086), (40, 1608043), (167, 385160), (334, 192580), (668, 96290), (835, 77032), (1336, 48145), (1670, 38516), (3340, 19258), (6680, 9629)]