21000613940

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1201}}^1\times {\mathrm{8171}}^1$

素因数の和:9488

約数の個数: 48

約数和(自身を含む): 44555966784

約数和(自身を除く): 23555352844

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 1201, 2140, 2402, 4804, 6005, 8171, 12010, 16342, 24020, 32684, 40855, 81710, 128507, 163420, 257014, 514028, 642535, 874297, 1285070, 1748594, 2570140, 3497188, 4371485, 8742970, 9813371, 17485940, 19626742, 39253484, 49066855, 98133710, 196267420, 1050030697, 2100061394, 4200122788, 5250153485, 10500306970, 21000613940]

約数ペア:

[(1, 21000613940), (2, 10500306970), (4, 5250153485), (5, 4200122788), (10, 2100061394), (20, 1050030697), (107, 196267420), (214, 98133710), (428, 49066855), (535, 39253484), (1070, 19626742), (1201, 17485940), (2140, 9813371), (2402, 8742970), (4804, 4371485), (6005, 3497188), (8171, 2570140), (12010, 1748594), (16342, 1285070), (24020, 874297), (32684, 642535), (40855, 514028), (81710, 257014), (128507, 163420)]