3990320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1653

約数の個数: 40

約数和(自身を含む): 9582720

約数和(自身を除く): 5592400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 1609, 2480, 3218, 6436, 8045, 12872, 16090, 25744, 32180, 49879, 64360, 99758, 128720, 199516, 249395, 399032, 498790, 798064, 997580, 1995160, 3990320]

約数ペア:

[(1, 3990320), (2, 1995160), (4, 997580), (5, 798064), (8, 498790), (10, 399032), (16, 249395), (20, 199516), (31, 128720), (40, 99758), (62, 64360), (80, 49879), (124, 32180), (155, 25744), (248, 16090), (310, 12872), (496, 8045), (620, 6436), (1240, 3218), (1609, 2480)]