28672640

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:721

約数の個数: 64

約数和(自身を含む): 69621120

約数和(自身を除く): 40948480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 284, 320, 355, 568, 631, 640, 710, 1136, 1262, 1420, 2272, 2524, 2840, 3155, 4544, 5048, 5680, 6310, 9088, 10096, 11360, 12620, 20192, 22720, 25240, 40384, 44801, 45440, 50480, 80768, 89602, 100960, 179204, 201920, 224005, 358408, 403840, 448010, 716816, 896020, 1433632, 1792040, 2867264, 3584080, 5734528, 7168160, 14336320, 28672640]

約数ペア:

[(1, 28672640), (2, 14336320), (4, 7168160), (5, 5734528), (8, 3584080), (10, 2867264), (16, 1792040), (20, 1433632), (32, 896020), (40, 716816), (64, 448010), (71, 403840), (80, 358408), (128, 224005), (142, 201920), (160, 179204), (284, 100960), (320, 89602), (355, 80768), (568, 50480), (631, 45440), (640, 44801), (710, 40384), (1136, 25240), (1262, 22720), (1420, 20192), (2272, 12620), (2524, 11360), (2840, 10096), (3155, 9088), (4544, 6310), (5048, 5680)]