20735360

素因数分解:

$2^7\times 5^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 50122800

約数和(自身を除く): 29387440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 179, 181, 320, 358, 362, 640, 716, 724, 895, 905, 1432, 1448, 1790, 1810, 2864, 2896, 3580, 3620, 5728, 5792, 7160, 7240, 11456, 11584, 14320, 14480, 22912, 23168, 28640, 28960, 32399, 57280, 57920, 64798, 114560, 115840, 129596, 161995, 259192, 323990, 518384, 647980, 1036768, 1295960, 2073536, 2591920, 4147072, 5183840, 10367680, 20735360]

約数ペア:

[(1, 20735360), (2, 10367680), (4, 5183840), (5, 4147072), (8, 2591920), (10, 2073536), (16, 1295960), (20, 1036768), (32, 647980), (40, 518384), (64, 323990), (80, 259192), (128, 161995), (160, 129596), (179, 115840), (181, 114560), (320, 64798), (358, 57920), (362, 57280), (640, 32399), (716, 28960), (724, 28640), (895, 23168), (905, 22912), (1432, 14480), (1448, 14320), (1790, 11584), (1810, 11456), (2864, 7240), (2896, 7160), (3580, 5792), (3620, 5728)]