20013621.000000000

素因数分解:

$2^4\times 3^3\times {\mathrm{473531}}^1$

素因数の和:473548

約数の個数: 40

約数和(自身を含む): 587179680

約数和(自身を除く): 382614288

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432, 473531, 947062, 1420593, 1894124, 2841186, 3788248, 4261779, 5682372, 7576496, 8523558, 11364744, 12785337, 17047116, 22729488, 25570674, 34094232, 51141348, 68188464, 102282696, 204565392]

約数ペア:

[(1, 204565392), (2, 102282696), (3, 68188464), (4, 51141348), (6, 34094232), (8, 25570674), (9, 22729488), (12, 17047116), (16, 12785337), (18, 11364744), (24, 8523558), (27, 7576496), (36, 5682372), (48, 4261779), (54, 3788248), (72, 2841186), (108, 1894124), (144, 1420593), (216, 947062), (432, 473531)]