21317256

素因数分解:

$2^3\times 3^4\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 60722640

約数和(自身を除く): 39405384

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 67, 72, 81, 108, 134, 162, 201, 216, 268, 324, 402, 491, 536, 603, 648, 804, 982, 1206, 1473, 1608, 1809, 1964, 2412, 2946, 3618, 3928, 4419, 4824, 5427, 5892, 7236, 8838, 10854, 11784, 13257, 14472, 17676, 21708, 26514, 32897, 35352, 39771, 43416, 53028, 65794, 79542, 98691, 106056, 131588, 159084, 197382, 263176, 296073, 318168, 394764, 592146, 789528, 888219, 1184292, 1776438, 2368584, 2664657, 3552876, 5329314, 7105752, 10658628, 21317256]

約数ペア:

[(1, 21317256), (2, 10658628), (3, 7105752), (4, 5329314), (6, 3552876), (8, 2664657), (9, 2368584), (12, 1776438), (18, 1184292), (24, 888219), (27, 789528), (36, 592146), (54, 394764), (67, 318168), (72, 296073), (81, 263176), (108, 197382), (134, 159084), (162, 131588), (201, 106056), (216, 98691), (268, 79542), (324, 65794), (402, 53028), (491, 43416), (536, 39771), (603, 35352), (648, 32897), (804, 26514), (982, 21708), (1206, 17676), (1473, 14472), (1608, 13257), (1809, 11784), (1964, 10854), (2412, 8838), (2946, 7236), (3618, 5892), (3928, 5427), (4419, 4824)]