21512628

素因数分解:

$2^2\times 3^4\times {\mathrm{67}}^1\times {\mathrm{991}}^1$

素因数の和:1074

約数の個数: 60

約数和(自身を含む): 57135232

約数和(自身を除く): 35622604

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 67, 81, 108, 134, 162, 201, 268, 324, 402, 603, 804, 991, 1206, 1809, 1982, 2412, 2973, 3618, 3964, 5427, 5946, 7236, 8919, 10854, 11892, 17838, 21708, 26757, 35676, 53514, 66397, 80271, 107028, 132794, 160542, 199191, 265588, 321084, 398382, 597573, 796764, 1195146, 1792719, 2390292, 3585438, 5378157, 7170876, 10756314, 21512628]

約数ペア:

[(1, 21512628), (2, 10756314), (3, 7170876), (4, 5378157), (6, 3585438), (9, 2390292), (12, 1792719), (18, 1195146), (27, 796764), (36, 597573), (54, 398382), (67, 321084), (81, 265588), (108, 199191), (134, 160542), (162, 132794), (201, 107028), (268, 80271), (324, 66397), (402, 53514), (603, 35676), (804, 26757), (991, 21708), (1206, 17838), (1809, 11892), (1982, 10854), (2412, 8919), (2973, 7236), (3618, 5946), (3964, 5427)]