21743960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{983}}^1$

素因数の和:1080

約数の個数: 64

約数和(自身を含む): 56678400

約数和(自身を除く): 34934440

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, 983, 1106, 1580, 1966, 2212, 2765, 3160, 3932, 4424, 4915, 5530, 6881, 7864, 9830, 11060, 13762, 19660, 22120, 27524, 34405, 39320, 55048, 68810, 77657, 137620, 155314, 275240, 310628, 388285, 543599, 621256, 776570, 1087198, 1553140, 2174396, 2717995, 3106280, 4348792, 5435990, 10871980, 21743960]

約数ペア:

[(1, 21743960), (2, 10871980), (4, 5435990), (5, 4348792), (7, 3106280), (8, 2717995), (10, 2174396), (14, 1553140), (20, 1087198), (28, 776570), (35, 621256), (40, 543599), (56, 388285), (70, 310628), (79, 275240), (140, 155314), (158, 137620), (280, 77657), (316, 68810), (395, 55048), (553, 39320), (632, 34405), (790, 27524), (983, 22120), (1106, 19660), (1580, 13762), (1966, 11060), (2212, 9830), (2765, 7864), (3160, 6881), (3932, 5530), (4424, 4915)]