51805040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1171}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 139514880

約数和(自身を除く): 87709840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 553, 560, 632, 790, 1106, 1171, 1264, 1580, 2212, 2342, 2765, 3160, 4424, 4684, 5530, 5855, 6320, 8197, 8848, 9368, 11060, 11710, 16394, 18736, 22120, 23420, 32788, 40985, 44240, 46840, 65576, 81970, 92509, 93680, 131152, 163940, 185018, 327880, 370036, 462545, 647563, 655760, 740072, 925090, 1295126, 1480144, 1850180, 2590252, 3237815, 3700360, 5180504, 6475630, 7400720, 10361008, 12951260, 25902520, 51805040]

約数ペア:

[(1, 51805040), (2, 25902520), (4, 12951260), (5, 10361008), (7, 7400720), (8, 6475630), (10, 5180504), (14, 3700360), (16, 3237815), (20, 2590252), (28, 1850180), (35, 1480144), (40, 1295126), (56, 925090), (70, 740072), (79, 655760), (80, 647563), (112, 462545), (140, 370036), (158, 327880), (280, 185018), (316, 163940), (395, 131152), (553, 93680), (560, 92509), (632, 81970), (790, 65576), (1106, 46840), (1171, 44240), (1264, 40985), (1580, 32788), (2212, 23420), (2342, 22120), (2765, 18736), (3160, 16394), (4424, 11710), (4684, 11060), (5530, 9368), (5855, 8848), (6320, 8197)]