256893156

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17707}}^1$

素因数の和:17761

約数の個数: 72

約数和(自身を含む): 721919744

約数和(自身を除く): 465026588

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 117, 124, 156, 186, 234, 279, 372, 403, 468, 558, 806, 1116, 1209, 1612, 2418, 3627, 4836, 7254, 14508, 17707, 35414, 53121, 70828, 106242, 159363, 212484, 230191, 318726, 460382, 548917, 637452, 690573, 920764, 1097834, 1381146, 1646751, 2071719, 2195668, 2762292, 3293502, 4143438, 4940253, 6587004, 7135921, 8286876, 9880506, 14271842, 19761012, 21407763, 28543684, 42815526, 64223289, 85631052, 128446578, 256893156]

約数ペア:

[(1, 256893156), (2, 128446578), (3, 85631052), (4, 64223289), (6, 42815526), (9, 28543684), (12, 21407763), (13, 19761012), (18, 14271842), (26, 9880506), (31, 8286876), (36, 7135921), (39, 6587004), (52, 4940253), (62, 4143438), (78, 3293502), (93, 2762292), (117, 2195668), (124, 2071719), (156, 1646751), (186, 1381146), (234, 1097834), (279, 920764), (372, 690573), (403, 637452), (468, 548917), (558, 460382), (806, 318726), (1116, 230191), (1209, 212484), (1612, 159363), (2418, 106242), (3627, 70828), (4836, 53121), (7254, 35414), (14508, 17707)]