28931812

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1303}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 63384832

約数和(自身を除く): 34453020

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 61, 91, 122, 182, 244, 364, 427, 793, 854, 1303, 1586, 1708, 2606, 3172, 5212, 5551, 9121, 11102, 16939, 18242, 22204, 33878, 36484, 67756, 79483, 118573, 158966, 237146, 317932, 474292, 556381, 1033279, 1112762, 2066558, 2225524, 4133116, 7232953, 14465906, 28931812]

約数ペア:

[(1, 28931812), (2, 14465906), (4, 7232953), (7, 4133116), (13, 2225524), (14, 2066558), (26, 1112762), (28, 1033279), (52, 556381), (61, 474292), (91, 317932), (122, 237146), (182, 158966), (244, 118573), (364, 79483), (427, 67756), (793, 36484), (854, 33878), (1303, 22204), (1586, 18242), (1708, 16939), (2606, 11102), (3172, 9121), (5212, 5551)]