20151560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{271}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 53758080

約数和(自身を除く): 33606520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 169, 220, 260, 271, 286, 338, 440, 520, 542, 572, 676, 715, 845, 1084, 1144, 1352, 1355, 1430, 1690, 1859, 2168, 2710, 2860, 2981, 3380, 3523, 3718, 5420, 5720, 5962, 6760, 7046, 7436, 9295, 10840, 11924, 14092, 14872, 14905, 17615, 18590, 23848, 28184, 29810, 35230, 37180, 38753, 45799, 59620, 70460, 74360, 77506, 91598, 119240, 140920, 155012, 183196, 193765, 228995, 310024, 366392, 387530, 457990, 503789, 775060, 915980, 1007578, 1550120, 1831960, 2015156, 2518945, 4030312, 5037890, 10075780, 20151560]

約数ペア:

[(1, 20151560), (2, 10075780), (4, 5037890), (5, 4030312), (8, 2518945), (10, 2015156), (11, 1831960), (13, 1550120), (20, 1007578), (22, 915980), (26, 775060), (40, 503789), (44, 457990), (52, 387530), (55, 366392), (65, 310024), (88, 228995), (104, 193765), (110, 183196), (130, 155012), (143, 140920), (169, 119240), (220, 91598), (260, 77506), (271, 74360), (286, 70460), (338, 59620), (440, 45799), (520, 38753), (542, 37180), (572, 35230), (676, 29810), (715, 28184), (845, 23848), (1084, 18590), (1144, 17615), (1352, 14905), (1355, 14872), (1430, 14092), (1690, 11924), (1859, 10840), (2168, 9295), (2710, 7436), (2860, 7046), (2981, 6760), (3380, 5962), (3523, 5720), (3718, 5420)]