21081608

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 41391000

約数和(自身を除く): 20309392

約数列:

[1, 2, 4, 8, 29, 58, 89, 116, 178, 232, 356, 712, 1021, 2042, 2581, 4084, 5162, 8168, 10324, 20648, 29609, 59218, 90869, 118436, 181738, 236872, 363476, 726952, 2635201, 5270402, 10540804, 21081608]

約数ペア:

[(1, 21081608), (2, 10540804), (4, 5270402), (8, 2635201), (29, 726952), (58, 363476), (89, 236872), (116, 181738), (178, 118436), (232, 90869), (356, 59218), (712, 29609), (1021, 20648), (2042, 10324), (2581, 8168), (4084, 5162)]