66884020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:653

約数の個数: 72

約数和(自身を含む): 164898720

約数和(自身を除く): 98014700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 196, 245, 278, 490, 491, 556, 695, 973, 980, 982, 1390, 1946, 1964, 2455, 2780, 3437, 3892, 4865, 4910, 6811, 6874, 9730, 9820, 13622, 13748, 17185, 19460, 24059, 27244, 34055, 34370, 48118, 68110, 68249, 68740, 96236, 120295, 136220, 136498, 240590, 272996, 341245, 477743, 481180, 682490, 955486, 1364980, 1910972, 2388715, 3344201, 4777430, 6688402, 9554860, 13376804, 16721005, 33442010, 66884020]

約数ペア:

[(1, 66884020), (2, 33442010), (4, 16721005), (5, 13376804), (7, 9554860), (10, 6688402), (14, 4777430), (20, 3344201), (28, 2388715), (35, 1910972), (49, 1364980), (70, 955486), (98, 682490), (139, 481180), (140, 477743), (196, 341245), (245, 272996), (278, 240590), (490, 136498), (491, 136220), (556, 120295), (695, 96236), (973, 68740), (980, 68249), (982, 68110), (1390, 48118), (1946, 34370), (1964, 34055), (2455, 27244), (2780, 24059), (3437, 19460), (3892, 17185), (4865, 13748), (4910, 13622), (6811, 9820), (6874, 9730)]