21699650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:564

約数の個数: 72

約数和(自身を含む): 49808196

約数和(自身を除く): 28108546

約数列:

[1, 2, 5, 7, 10, 14, 17, 25, 34, 35, 49, 50, 70, 85, 98, 119, 170, 175, 238, 245, 350, 425, 490, 521, 595, 833, 850, 1042, 1190, 1225, 1666, 2450, 2605, 2975, 3647, 4165, 5210, 5950, 7294, 8330, 8857, 13025, 17714, 18235, 20825, 25529, 26050, 36470, 41650, 44285, 51058, 61999, 88570, 91175, 123998, 127645, 182350, 221425, 255290, 309995, 433993, 442850, 619990, 638225, 867986, 1276450, 1549975, 2169965, 3099950, 4339930, 10849825, 21699650]

約数ペア:

[(1, 21699650), (2, 10849825), (5, 4339930), (7, 3099950), (10, 2169965), (14, 1549975), (17, 1276450), (25, 867986), (34, 638225), (35, 619990), (49, 442850), (50, 433993), (70, 309995), (85, 255290), (98, 221425), (119, 182350), (170, 127645), (175, 123998), (238, 91175), (245, 88570), (350, 61999), (425, 51058), (490, 44285), (521, 41650), (595, 36470), (833, 26050), (850, 25529), (1042, 20825), (1190, 18235), (1225, 17714), (1666, 13025), (2450, 8857), (2605, 8330), (2975, 7294), (3647, 5950), (4165, 5210)]