644016248

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{1657}}^1\times {\mathrm{2557}}^1$

素因数の和:4239

約数の個数: 32

約数和(自身を含む): 1272349200

約数和(自身を除く): 628332952

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 1657, 2557, 3314, 5114, 6628, 10228, 13256, 20456, 31483, 48583, 62966, 97166, 125932, 194332, 251864, 388664, 4236949, 8473898, 16947796, 33895592, 80502031, 161004062, 322008124, 644016248]

約数ペア:

[(1, 644016248), (2, 322008124), (4, 161004062), (8, 80502031), (19, 33895592), (38, 16947796), (76, 8473898), (152, 4236949), (1657, 388664), (2557, 251864), (3314, 194332), (5114, 125932), (6628, 97166), (10228, 62966), (13256, 48583), (20456, 31483)]