21031440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87631}}^1$

素因数の和:87647

約数の個数: 40

約数和(自身を含む): 65198208

約数和(自身を除く): 44166768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87631, 175262, 262893, 350524, 438155, 525786, 701048, 876310, 1051572, 1314465, 1402096, 1752620, 2103144, 2628930, 3505240, 4206288, 5257860, 7010480, 10515720, 21031440]

約数ペア:

[(1, 21031440), (2, 10515720), (3, 7010480), (4, 5257860), (5, 4206288), (6, 3505240), (8, 2628930), (10, 2103144), (12, 1752620), (15, 1402096), (16, 1314465), (20, 1051572), (24, 876310), (30, 701048), (40, 525786), (48, 438155), (60, 350524), (80, 262893), (120, 175262), (240, 87631)]