399690928

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1231}}^1$

素因数の和:1482

約数の個数: 80

約数和(自身を含む): 958160896

約数和(自身を除く): 558469968

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 223, 364, 446, 728, 892, 1231, 1456, 1561, 1784, 2462, 2899, 3122, 3568, 4924, 5798, 6244, 8617, 9848, 11596, 12488, 16003, 17234, 19696, 20293, 23192, 24976, 32006, 34468, 40586, 46384, 64012, 68936, 81172, 112021, 128024, 137872, 162344, 224042, 256048, 274513, 324688, 448084, 549026, 896168, 1098052, 1792336, 1921591, 2196104, 3568669, 3843182, 4392208, 7137338, 7686364, 14274676, 15372728, 24980683, 28549352, 30745456, 49961366, 57098704, 99922732, 199845464, 399690928]

約数ペア:

[(1, 399690928), (2, 199845464), (4, 99922732), (7, 57098704), (8, 49961366), (13, 30745456), (14, 28549352), (16, 24980683), (26, 15372728), (28, 14274676), (52, 7686364), (56, 7137338), (91, 4392208), (104, 3843182), (112, 3568669), (182, 2196104), (208, 1921591), (223, 1792336), (364, 1098052), (446, 896168), (728, 549026), (892, 448084), (1231, 324688), (1456, 274513), (1561, 256048), (1784, 224042), (2462, 162344), (2899, 137872), (3122, 128024), (3568, 112021), (4924, 81172), (5798, 68936), (6244, 64012), (8617, 46384), (9848, 40586), (11596, 34468), (12488, 32006), (16003, 24976), (17234, 23192), (19696, 20293)]