131142680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{757}}^1$

素因数の和:900

約数の個数: 64

約数和(自身を含む): 304534080

約数和(自身を除く): 173391400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 122, 142, 244, 284, 305, 355, 488, 568, 610, 710, 757, 1220, 1420, 1514, 2440, 2840, 3028, 3785, 4331, 6056, 7570, 8662, 15140, 17324, 21655, 30280, 34648, 43310, 46177, 53747, 86620, 92354, 107494, 173240, 184708, 214988, 230885, 268735, 369416, 429976, 461770, 537470, 923540, 1074940, 1847080, 2149880, 3278567, 6557134, 13114268, 16392835, 26228536, 32785670, 65571340, 131142680]

約数ペア:

[(1, 131142680), (2, 65571340), (4, 32785670), (5, 26228536), (8, 16392835), (10, 13114268), (20, 6557134), (40, 3278567), (61, 2149880), (71, 1847080), (122, 1074940), (142, 923540), (244, 537470), (284, 461770), (305, 429976), (355, 369416), (488, 268735), (568, 230885), (610, 214988), (710, 184708), (757, 173240), (1220, 107494), (1420, 92354), (1514, 86620), (2440, 53747), (2840, 46177), (3028, 43310), (3785, 34648), (4331, 30280), (6056, 21655), (7570, 17324), (8662, 15140)]