51571980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{12457}}^1$

素因数の和:12495

約数の個数: 72

約数和(自身を含む): 163249632

約数和(自身を除く): 111677652

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 12457, 24914, 37371, 49828, 62285, 74742, 112113, 124570, 149484, 186855, 224226, 249140, 286511, 373710, 448452, 560565, 573022, 747420, 859533, 1121130, 1146044, 1432555, 1719066, 2242260, 2578599, 2865110, 3438132, 4297665, 5157198, 5730220, 8595330, 10314396, 12892995, 17190660, 25785990, 51571980]

約数ペア:

[(1, 51571980), (2, 25785990), (3, 17190660), (4, 12892995), (5, 10314396), (6, 8595330), (9, 5730220), (10, 5157198), (12, 4297665), (15, 3438132), (18, 2865110), (20, 2578599), (23, 2242260), (30, 1719066), (36, 1432555), (45, 1146044), (46, 1121130), (60, 859533), (69, 747420), (90, 573022), (92, 560565), (115, 448452), (138, 373710), (180, 286511), (207, 249140), (230, 224226), (276, 186855), (345, 149484), (414, 124570), (460, 112113), (690, 74742), (828, 62285), (1035, 49828), (1380, 37371), (2070, 24914), (4140, 12457)]