20458240

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1453}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 53495568

約数和(自身を除く): 33037328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1453, 1760, 2816, 2906, 3520, 5812, 7040, 7265, 11624, 14080, 14530, 15983, 23248, 29060, 31966, 46496, 58120, 63932, 79915, 92992, 116240, 127864, 159830, 185984, 232480, 255728, 319660, 371968, 464960, 511456, 639320, 929920, 1022912, 1278640, 1859840, 2045824, 2557280, 4091648, 5114560, 10229120, 20458240]

約数ペア:

[(1, 20458240), (2, 10229120), (4, 5114560), (5, 4091648), (8, 2557280), (10, 2045824), (11, 1859840), (16, 1278640), (20, 1022912), (22, 929920), (32, 639320), (40, 511456), (44, 464960), (55, 371968), (64, 319660), (80, 255728), (88, 232480), (110, 185984), (128, 159830), (160, 127864), (176, 116240), (220, 92992), (256, 79915), (320, 63932), (352, 58120), (440, 46496), (640, 31966), (704, 29060), (880, 23248), (1280, 15983), (1408, 14530), (1453, 14080), (1760, 11624), (2816, 7265), (2906, 7040), (3520, 5812)]