21678390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3049}}^1$

素因数の和:3141

約数の個数: 48

約数和(自身を含む): 57096000

約数和(自身を除く): 35417610

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 79, 90, 158, 237, 395, 474, 711, 790, 1185, 1422, 2370, 3049, 3555, 6098, 7110, 9147, 15245, 18294, 27441, 30490, 45735, 54882, 91470, 137205, 240871, 274410, 481742, 722613, 1204355, 1445226, 2167839, 2408710, 3613065, 4335678, 7226130, 10839195, 21678390]

約数ペア:

[(1, 21678390), (2, 10839195), (3, 7226130), (5, 4335678), (6, 3613065), (9, 2408710), (10, 2167839), (15, 1445226), (18, 1204355), (30, 722613), (45, 481742), (79, 274410), (90, 240871), (158, 137205), (237, 91470), (395, 54882), (474, 45735), (711, 30490), (790, 27441), (1185, 18294), (1422, 15245), (2370, 9147), (3049, 7110), (3555, 6098)]