21259648

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{4051}}^1$

素因数の和:4106

約数の個数: 32

約数和(自身を含む): 43396920

約数和(自身を除く): 22137272

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 328, 656, 1312, 2624, 4051, 5248, 8102, 16204, 32408, 64816, 129632, 166091, 259264, 332182, 518528, 664364, 1328728, 2657456, 5314912, 10629824, 21259648]

約数ペア:

[(1, 21259648), (2, 10629824), (4, 5314912), (8, 2657456), (16, 1328728), (32, 664364), (41, 518528), (64, 332182), (82, 259264), (128, 166091), (164, 129632), (328, 64816), (656, 32408), (1312, 16204), (2624, 8102), (4051, 5248)]