21295260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16901}}^1$

素因数の和:16923

約数の個数: 72

約数和(自身を含む): 73827936

約数和(自身を除く): 52532676

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16901, 33802, 50703, 67604, 84505, 101406, 118307, 152109, 169010, 202812, 236614, 253515, 304218, 338020, 354921, 473228, 507030, 591535, 608436, 709842, 760545, 1014060, 1064763, 1183070, 1419684, 1521090, 1774605, 2129526, 2366140, 3042180, 3549210, 4259052, 5323815, 7098420, 10647630, 21295260]

約数ペア:

[(1, 21295260), (2, 10647630), (3, 7098420), (4, 5323815), (5, 4259052), (6, 3549210), (7, 3042180), (9, 2366140), (10, 2129526), (12, 1774605), (14, 1521090), (15, 1419684), (18, 1183070), (20, 1064763), (21, 1014060), (28, 760545), (30, 709842), (35, 608436), (36, 591535), (42, 507030), (45, 473228), (60, 354921), (63, 338020), (70, 304218), (84, 253515), (90, 236614), (105, 202812), (126, 169010), (140, 152109), (180, 118307), (210, 101406), (252, 84505), (315, 67604), (420, 50703), (630, 33802), (1260, 16901)]