27920720

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{829}}^1$

素因数の和:1263

約数の個数: 40

約数和(自身を含む): 65148360

約数和(自身を除く): 37227640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 829, 842, 1658, 1684, 2105, 3316, 3368, 4145, 4210, 6632, 6736, 8290, 8420, 13264, 16580, 16840, 33160, 33680, 66320, 349009, 698018, 1396036, 1745045, 2792072, 3490090, 5584144, 6980180, 13960360, 27920720]

約数ペア:

[(1, 27920720), (2, 13960360), (4, 6980180), (5, 5584144), (8, 3490090), (10, 2792072), (16, 1745045), (20, 1396036), (40, 698018), (80, 349009), (421, 66320), (829, 33680), (842, 33160), (1658, 16840), (1684, 16580), (2105, 13264), (3316, 8420), (3368, 8290), (4145, 6736), (4210, 6632)]