28391195

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 40697856

約数和(自身を除く): 12306661

約数列:

[1, 5, 7, 31, 35, 137, 155, 191, 217, 685, 955, 959, 1085, 1337, 4247, 4795, 5921, 6685, 21235, 26167, 29605, 29729, 41447, 130835, 148645, 183169, 207235, 811177, 915845, 4055885, 5678239, 28391195]

約数ペア:

[(1, 28391195), (5, 5678239), (7, 4055885), (31, 915845), (35, 811177), (137, 207235), (155, 183169), (191, 148645), (217, 130835), (685, 41447), (955, 29729), (959, 29605), (1085, 26167), (1337, 21235), (4247, 6685), (4795, 5921)]