21998480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:424

約数の個数: 80

約数和(自身を含む): 59055744

約数和(自身を除く): 37057264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 241, 280, 326, 482, 560, 652, 815, 964, 1141, 1205, 1304, 1630, 1687, 1928, 2282, 2410, 2608, 3260, 3374, 3856, 4564, 4820, 5705, 6520, 6748, 8435, 9128, 9640, 11410, 13040, 13496, 16870, 18256, 19280, 22820, 26992, 33740, 39283, 45640, 67480, 78566, 91280, 134960, 157132, 196415, 274981, 314264, 392830, 549962, 628528, 785660, 1099924, 1374905, 1571320, 2199848, 2749810, 3142640, 4399696, 5499620, 10999240, 21998480]

約数ペア:

[(1, 21998480), (2, 10999240), (4, 5499620), (5, 4399696), (7, 3142640), (8, 2749810), (10, 2199848), (14, 1571320), (16, 1374905), (20, 1099924), (28, 785660), (35, 628528), (40, 549962), (56, 392830), (70, 314264), (80, 274981), (112, 196415), (140, 157132), (163, 134960), (241, 91280), (280, 78566), (326, 67480), (482, 45640), (560, 39283), (652, 33740), (815, 26992), (964, 22820), (1141, 19280), (1205, 18256), (1304, 16870), (1630, 13496), (1687, 13040), (1928, 11410), (2282, 9640), (2410, 9128), (2608, 8435), (3260, 6748), (3374, 6520), (3856, 5705), (4564, 4820)]