19951600

素因数分解:

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

素因数の和:1658

約数の個数: 60

約数和(自身を含む): 49510720

約数和(自身を除く): 29559120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1609, 2480, 3100, 3218, 6200, 6436, 8045, 12400, 12872, 16090, 25744, 32180, 40225, 49879, 64360, 80450, 99758, 128720, 160900, 199516, 249395, 321800, 399032, 498790, 643600, 798064, 997580, 1246975, 1995160, 2493950, 3990320, 4987900, 9975800, 19951600]

約数ペア:

[(1, 19951600), (2, 9975800), (4, 4987900), (5, 3990320), (8, 2493950), (10, 1995160), (16, 1246975), (20, 997580), (25, 798064), (31, 643600), (40, 498790), (50, 399032), (62, 321800), (80, 249395), (100, 199516), (124, 160900), (155, 128720), (200, 99758), (248, 80450), (310, 64360), (400, 49879), (496, 40225), (620, 32180), (775, 25744), (1240, 16090), (1550, 12872), (1609, 12400), (2480, 8045), (3100, 6436), (3218, 6200)]