80317720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3631}}^1$

素因数の和:3728

約数の個数: 64

約数和(自身を含む): 209203200

約数和(自身を除く): 128885480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1580, 2212, 2765, 3160, 3631, 4424, 5530, 7262, 11060, 14524, 18155, 22120, 25417, 29048, 36310, 50834, 72620, 101668, 127085, 145240, 203336, 254170, 286849, 508340, 573698, 1016680, 1147396, 1434245, 2007943, 2294792, 2868490, 4015886, 5736980, 8031772, 10039715, 11473960, 16063544, 20079430, 40158860, 80317720]

約数ペア:

[(1, 80317720), (2, 40158860), (4, 20079430), (5, 16063544), (7, 11473960), (8, 10039715), (10, 8031772), (14, 5736980), (20, 4015886), (28, 2868490), (35, 2294792), (40, 2007943), (56, 1434245), (70, 1147396), (79, 1016680), (140, 573698), (158, 508340), (280, 286849), (316, 254170), (395, 203336), (553, 145240), (632, 127085), (790, 101668), (1106, 72620), (1580, 50834), (2212, 36310), (2765, 29048), (3160, 25417), (3631, 22120), (4424, 18155), (5530, 14524), (7262, 11060)]