19747240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12041}}^1$

素因数の和:12093

約数の個数: 32

約数和(自身を含む): 45518760

約数和(自身を除く): 25771520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12041, 24082, 48164, 60205, 96328, 120410, 240820, 481640, 493681, 987362, 1974724, 2468405, 3949448, 4936810, 9873620, 19747240]

約数ペア:

[(1, 19747240), (2, 9873620), (4, 4936810), (5, 3949448), (8, 2468405), (10, 1974724), (20, 987362), (40, 493681), (41, 481640), (82, 240820), (164, 120410), (205, 96328), (328, 60205), (410, 48164), (820, 24082), (1640, 12041)]