21904431484

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{727}}^1\times {\mathrm{18691}}^1$

素因数の和:19466

約数の個数: 48

約数和(自身を含む): 42673985536

約数和(自身を除く): 20769554052

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 727, 806, 1454, 1612, 2908, 9451, 18691, 18902, 22537, 37382, 37804, 45074, 74764, 90148, 242983, 292981, 485966, 579421, 585962, 971932, 1158842, 1171924, 2317684, 7532473, 13588357, 15064946, 27176714, 30129892, 54353428, 176648641, 353297282, 421239067, 706594564, 842478134, 1684956268, 5476107871, 10952215742, 21904431484]

約数ペア:

[(1, 21904431484), (2, 10952215742), (4, 5476107871), (13, 1684956268), (26, 842478134), (31, 706594564), (52, 421239067), (62, 353297282), (124, 176648641), (403, 54353428), (727, 30129892), (806, 27176714), (1454, 15064946), (1612, 13588357), (2908, 7532473), (9451, 2317684), (18691, 1171924), (18902, 1158842), (22537, 971932), (37382, 585962), (37804, 579421), (45074, 485966), (74764, 292981), (90148, 242983)]