21349142

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:248

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 13176298

約数列:

[1, 2, 31, 53, 62, 73, 89, 106, 146, 178, 1643, 2263, 2759, 3286, 3869, 4526, 4717, 5518, 6497, 7738, 9434, 12994, 119939, 146227, 201407, 239878, 292454, 344341, 402814, 688682, 10674571, 21349142]

約数ペア:

[(1, 21349142), (2, 10674571), (31, 688682), (53, 402814), (62, 344341), (73, 292454), (89, 239878), (106, 201407), (146, 146227), (178, 119939), (1643, 12994), (2263, 9434), (2759, 7738), (3286, 6497), (3869, 5518), (4526, 4717)]