21619140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4561}}^1$

素因数の和:4652

約数の個数: 48

約数和(自身を含む): 61313280

約数和(自身を除く): 39694140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4561, 4740, 9122, 13683, 18244, 22805, 27366, 45610, 54732, 68415, 91220, 136830, 273660, 360319, 720638, 1080957, 1441276, 1801595, 2161914, 3603190, 4323828, 5404785, 7206380, 10809570, 21619140]

約数ペア:

[(1, 21619140), (2, 10809570), (3, 7206380), (4, 5404785), (5, 4323828), (6, 3603190), (10, 2161914), (12, 1801595), (15, 1441276), (20, 1080957), (30, 720638), (60, 360319), (79, 273660), (158, 136830), (237, 91220), (316, 68415), (395, 54732), (474, 45610), (790, 27366), (948, 22805), (1185, 18244), (1580, 13683), (2370, 9122), (4561, 4740)]