21143044

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 41884416

約数和(自身を除く): 20741372

約数列:

[1, 2, 4, 13, 26, 41, 47, 52, 82, 94, 164, 188, 211, 422, 533, 611, 844, 1066, 1222, 1927, 2132, 2444, 2743, 3854, 5486, 7708, 8651, 9917, 10972, 17302, 19834, 25051, 34604, 39668, 50102, 100204, 112463, 128921, 224926, 257842, 406597, 449852, 515684, 813194, 1626388, 5285761, 10571522, 21143044]

約数ペア:

[(1, 21143044), (2, 10571522), (4, 5285761), (13, 1626388), (26, 813194), (41, 515684), (47, 449852), (52, 406597), (82, 257842), (94, 224926), (164, 128921), (188, 112463), (211, 100204), (422, 50102), (533, 39668), (611, 34604), (844, 25051), (1066, 19834), (1222, 17302), (1927, 10972), (2132, 9917), (2444, 8651), (2743, 7708), (3854, 5486)]