21393420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2393}}^1$

素因数の和:2554

約数の個数: 48

約数和(自身を含む): 60328800

約数和(自身を除く): 38935380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 149, 298, 447, 596, 745, 894, 1490, 1788, 2235, 2393, 2980, 4470, 4786, 7179, 8940, 9572, 11965, 14358, 23930, 28716, 35895, 47860, 71790, 143580, 356557, 713114, 1069671, 1426228, 1782785, 2139342, 3565570, 4278684, 5348355, 7131140, 10696710, 21393420]

約数ペア:

[(1, 21393420), (2, 10696710), (3, 7131140), (4, 5348355), (5, 4278684), (6, 3565570), (10, 2139342), (12, 1782785), (15, 1426228), (20, 1069671), (30, 713114), (60, 356557), (149, 143580), (298, 71790), (447, 47860), (596, 35895), (745, 28716), (894, 23930), (1490, 14358), (1788, 11965), (2235, 9572), (2393, 8940), (2980, 7179), (4470, 4786)]