645632

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:128

約数の個数: 40

約数和(自身を含む): 1403556

約数和(自身を除く): 757924

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 97, 104, 128, 194, 208, 256, 388, 416, 512, 776, 832, 1261, 1552, 1664, 2522, 3104, 3328, 5044, 6208, 6656, 10088, 12416, 20176, 24832, 40352, 49664, 80704, 161408, 322816, 645632]

約数ペア:

[(1, 645632), (2, 322816), (4, 161408), (8, 80704), (13, 49664), (16, 40352), (26, 24832), (32, 20176), (52, 12416), (64, 10088), (97, 6656), (104, 6208), (128, 5044), (194, 3328), (208, 3104), (256, 2522), (388, 1664), (416, 1552), (512, 1261), (776, 832)]