20225751

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 34433280

約数和(自身を除く): 14207529

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 139, 169, 273, 287, 417, 507, 533, 861, 973, 1183, 1599, 1807, 2919, 3549, 3731, 5421, 5699, 6929, 11193, 12649, 17097, 20787, 23491, 37947, 39893, 48503, 70473, 74087, 119679, 145509, 164437, 222261, 493311, 518609, 963131, 1555827, 2889393, 6741917, 20225751]

約数ペア:

[(1, 20225751), (3, 6741917), (7, 2889393), (13, 1555827), (21, 963131), (39, 518609), (41, 493311), (91, 222261), (123, 164437), (139, 145509), (169, 119679), (273, 74087), (287, 70473), (417, 48503), (507, 39893), (533, 37947), (861, 23491), (973, 20787), (1183, 17097), (1599, 12649), (1807, 11193), (2919, 6929), (3549, 5699), (3731, 5421)]