28445440

素因数分解:

$2^8\times 5^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 69316128

約数和(自身を除く): 40870688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 313, 320, 355, 568, 626, 640, 710, 1136, 1252, 1280, 1420, 1565, 2272, 2504, 2840, 3130, 4544, 5008, 5680, 6260, 9088, 10016, 11360, 12520, 18176, 20032, 22223, 22720, 25040, 40064, 44446, 45440, 50080, 80128, 88892, 90880, 100160, 111115, 177784, 200320, 222230, 355568, 400640, 444460, 711136, 888920, 1422272, 1777840, 2844544, 3555680, 5689088, 7111360, 14222720, 28445440]

約数ペア:

[(1, 28445440), (2, 14222720), (4, 7111360), (5, 5689088), (8, 3555680), (10, 2844544), (16, 1777840), (20, 1422272), (32, 888920), (40, 711136), (64, 444460), (71, 400640), (80, 355568), (128, 222230), (142, 200320), (160, 177784), (256, 111115), (284, 100160), (313, 90880), (320, 88892), (355, 80128), (568, 50080), (626, 45440), (640, 44446), (710, 40064), (1136, 25040), (1252, 22720), (1280, 22223), (1420, 20032), (1565, 18176), (2272, 12520), (2504, 11360), (2840, 10016), (3130, 9088), (4544, 6260), (5008, 5680)]