66720556

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 143001600

約数和(自身を除く): 76281044

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 79, 98, 124, 139, 158, 196, 217, 278, 316, 434, 553, 556, 868, 973, 1106, 1519, 1946, 2212, 2449, 3038, 3871, 3892, 4309, 4898, 6076, 6811, 7742, 8618, 9796, 10981, 13622, 15484, 17143, 17236, 21962, 27244, 30163, 34286, 43924, 60326, 68572, 76867, 120001, 120652, 153734, 211141, 240002, 307468, 340411, 422282, 480004, 538069, 680822, 844564, 1076138, 1361644, 2152276, 2382877, 4765754, 9531508, 16680139, 33360278, 66720556]

約数ペア:

[(1, 66720556), (2, 33360278), (4, 16680139), (7, 9531508), (14, 4765754), (28, 2382877), (31, 2152276), (49, 1361644), (62, 1076138), (79, 844564), (98, 680822), (124, 538069), (139, 480004), (158, 422282), (196, 340411), (217, 307468), (278, 240002), (316, 211141), (434, 153734), (553, 120652), (556, 120001), (868, 76867), (973, 68572), (1106, 60326), (1519, 43924), (1946, 34286), (2212, 30163), (2449, 27244), (3038, 21962), (3871, 17236), (3892, 17143), (4309, 15484), (4898, 13622), (6076, 10981), (6811, 9796), (7742, 8618)]