27940720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4421}}^1$

素因数の和:4513

約数の個数: 40

約数和(自身を含む): 65799360

約数和(自身を除く): 37858640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 4421, 6320, 8842, 17684, 22105, 35368, 44210, 70736, 88420, 176840, 349259, 353680, 698518, 1397036, 1746295, 2794072, 3492590, 5588144, 6985180, 13970360, 27940720]

約数ペア:

[(1, 27940720), (2, 13970360), (4, 6985180), (5, 5588144), (8, 3492590), (10, 2794072), (16, 1746295), (20, 1397036), (40, 698518), (79, 353680), (80, 349259), (158, 176840), (316, 88420), (395, 70736), (632, 44210), (790, 35368), (1264, 22105), (1580, 17684), (3160, 8842), (4421, 6320)]