21552520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:167

約数の個数: 96

約数和(自身を含む): 54918360

約数和(自身を除く): 33365840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 73, 88, 110, 121, 122, 146, 220, 242, 244, 292, 305, 365, 440, 484, 488, 584, 605, 610, 671, 730, 803, 968, 1210, 1220, 1342, 1460, 1606, 2420, 2440, 2684, 2920, 3212, 3355, 4015, 4453, 4840, 5368, 6424, 6710, 7381, 8030, 8833, 8906, 13420, 14762, 16060, 17666, 17812, 22265, 26840, 29524, 32120, 35332, 35624, 36905, 44165, 44530, 48983, 59048, 70664, 73810, 88330, 89060, 97966, 147620, 176660, 178120, 195932, 244915, 295240, 353320, 391864, 489830, 538813, 979660, 1077626, 1959320, 2155252, 2694065, 4310504, 5388130, 10776260, 21552520]

約数ペア:

[(1, 21552520), (2, 10776260), (4, 5388130), (5, 4310504), (8, 2694065), (10, 2155252), (11, 1959320), (20, 1077626), (22, 979660), (40, 538813), (44, 489830), (55, 391864), (61, 353320), (73, 295240), (88, 244915), (110, 195932), (121, 178120), (122, 176660), (146, 147620), (220, 97966), (242, 89060), (244, 88330), (292, 73810), (305, 70664), (365, 59048), (440, 48983), (484, 44530), (488, 44165), (584, 36905), (605, 35624), (610, 35332), (671, 32120), (730, 29524), (803, 26840), (968, 22265), (1210, 17812), (1220, 17666), (1342, 16060), (1460, 14762), (1606, 13420), (2420, 8906), (2440, 8833), (2684, 8030), (2920, 7381), (3212, 6710), (3355, 6424), (4015, 5368), (4453, 4840)]