158778280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{128047}}^1$

素因数の和:128089

約数の個数: 32

約数和(自身を含む): 368778240

約数和(自身を除く): 209999960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 128047, 256094, 512188, 640235, 1024376, 1280470, 2560940, 3969457, 5121880, 7938914, 15877828, 19847285, 31755656, 39694570, 79389140, 158778280]

約数ペア:

[(1, 158778280), (2, 79389140), (4, 39694570), (5, 31755656), (8, 19847285), (10, 15877828), (20, 7938914), (31, 5121880), (40, 3969457), (62, 2560940), (124, 1280470), (155, 1024376), (248, 640235), (310, 512188), (620, 256094), (1240, 128047)]