21243040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1459}}^1$

素因数の和:1494

約数の個数: 96

約数和(自身を含む): 61810560

約数和(自身を除く): 40567520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1456, 1459, 1820, 2080, 2912, 2918, 3640, 5836, 7280, 7295, 10213, 11672, 14560, 14590, 18967, 20426, 23344, 29180, 37934, 40852, 46688, 51065, 58360, 75868, 81704, 94835, 102130, 116720, 132769, 151736, 163408, 189670, 204260, 233440, 265538, 303472, 326816, 379340, 408520, 531076, 606944, 663845, 758680, 817040, 1062152, 1327690, 1517360, 1634080, 2124304, 2655380, 3034720, 4248608, 5310760, 10621520, 21243040]

約数ペア:

[(1, 21243040), (2, 10621520), (4, 5310760), (5, 4248608), (7, 3034720), (8, 2655380), (10, 2124304), (13, 1634080), (14, 1517360), (16, 1327690), (20, 1062152), (26, 817040), (28, 758680), (32, 663845), (35, 606944), (40, 531076), (52, 408520), (56, 379340), (65, 326816), (70, 303472), (80, 265538), (91, 233440), (104, 204260), (112, 189670), (130, 163408), (140, 151736), (160, 132769), (182, 116720), (208, 102130), (224, 94835), (260, 81704), (280, 75868), (364, 58360), (416, 51065), (455, 46688), (520, 40852), (560, 37934), (728, 29180), (910, 23344), (1040, 20426), (1120, 18967), (1456, 14590), (1459, 14560), (1820, 11672), (2080, 10213), (2912, 7295), (2918, 7280), (3640, 5836)]