81383757

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1151}}^1$

素因数の和:1218

約数の個数: 48

約数和(自身を含む): 139732992

約数和(自身を除く): 58349235

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 481, 637, 777, 1151, 1443, 1813, 1911, 3367, 3453, 5439, 8057, 10101, 14963, 23569, 24171, 42587, 44889, 56399, 70707, 104741, 127761, 169197, 298109, 314223, 553631, 733187, 894327, 1660893, 2086763, 2199561, 3875417, 6260289, 11626251, 27127919, 81383757]

約数ペア:

[(1, 81383757), (3, 27127919), (7, 11626251), (13, 6260289), (21, 3875417), (37, 2199561), (39, 2086763), (49, 1660893), (91, 894327), (111, 733187), (147, 553631), (259, 314223), (273, 298109), (481, 169197), (637, 127761), (777, 104741), (1151, 70707), (1443, 56399), (1813, 44889), (1911, 42587), (3367, 24171), (3453, 23569), (5439, 14963), (8057, 10101)]