21401484

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 55277712

約数和(自身を除く): 33876228

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 61, 78, 122, 156, 169, 173, 183, 244, 338, 346, 366, 507, 519, 676, 692, 732, 793, 1014, 1038, 1586, 2028, 2076, 2249, 2379, 3172, 4498, 4758, 6747, 8996, 9516, 10309, 10553, 13494, 20618, 21106, 26988, 29237, 30927, 31659, 41236, 42212, 58474, 61854, 63318, 87711, 116948, 123708, 126636, 137189, 175422, 274378, 350844, 411567, 548756, 823134, 1646268, 1783457, 3566914, 5350371, 7133828, 10700742, 21401484]

約数ペア:

[(1, 21401484), (2, 10700742), (3, 7133828), (4, 5350371), (6, 3566914), (12, 1783457), (13, 1646268), (26, 823134), (39, 548756), (52, 411567), (61, 350844), (78, 274378), (122, 175422), (156, 137189), (169, 126636), (173, 123708), (183, 116948), (244, 87711), (338, 63318), (346, 61854), (366, 58474), (507, 42212), (519, 41236), (676, 31659), (692, 30927), (732, 29237), (793, 26988), (1014, 21106), (1038, 20618), (1586, 13494), (2028, 10553), (2076, 10309), (2249, 9516), (2379, 8996), (3172, 6747), (4498, 4758)]