19745840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14519}}^1$

素因数の和:14549

約数の個数: 40

約数和(自身を含む): 48612960

約数和(自身を除く): 28867120

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14519, 29038, 58076, 72595, 116152, 145190, 232304, 246823, 290380, 493646, 580760, 987292, 1161520, 1234115, 1974584, 2468230, 3949168, 4936460, 9872920, 19745840]

約数ペア:

[(1, 19745840), (2, 9872920), (4, 4936460), (5, 3949168), (8, 2468230), (10, 1974584), (16, 1234115), (17, 1161520), (20, 987292), (34, 580760), (40, 493646), (68, 290380), (80, 246823), (85, 232304), (136, 145190), (170, 116152), (272, 72595), (340, 58076), (680, 29038), (1360, 14519)]