21545992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 46287360

約数和(自身を除く): 24741368

約数列:

[1, 2, 4, 8, 13, 26, 31, 41, 52, 62, 82, 104, 124, 163, 164, 248, 326, 328, 403, 533, 652, 806, 1066, 1271, 1304, 1612, 2119, 2132, 2542, 3224, 4238, 4264, 5053, 5084, 6683, 8476, 10106, 10168, 13366, 16523, 16952, 20212, 26732, 33046, 40424, 53464, 65689, 66092, 86879, 131378, 132184, 173758, 207173, 262756, 347516, 414346, 525512, 695032, 828692, 1657384, 2693249, 5386498, 10772996, 21545992]

約数ペア:

[(1, 21545992), (2, 10772996), (4, 5386498), (8, 2693249), (13, 1657384), (26, 828692), (31, 695032), (41, 525512), (52, 414346), (62, 347516), (82, 262756), (104, 207173), (124, 173758), (163, 132184), (164, 131378), (248, 86879), (326, 66092), (328, 65689), (403, 53464), (533, 40424), (652, 33046), (806, 26732), (1066, 20212), (1271, 16952), (1304, 16523), (1612, 13366), (2119, 10168), (2132, 10106), (2542, 8476), (3224, 6683), (4238, 5084), (4264, 5053)]