21261552

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^2\times {\mathrm{2621}}^1$

素因数の和:2658

約数の個数: 60

約数和(自身を含む): 59498424

約数和(自身を除く): 38236872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 169, 208, 312, 338, 507, 624, 676, 1014, 1352, 2028, 2621, 2704, 4056, 5242, 7863, 8112, 10484, 15726, 20968, 31452, 34073, 41936, 62904, 68146, 102219, 125808, 136292, 204438, 272584, 408876, 442949, 545168, 817752, 885898, 1328847, 1635504, 1771796, 2657694, 3543592, 5315388, 7087184, 10630776, 21261552]

約数ペア:

[(1, 21261552), (2, 10630776), (3, 7087184), (4, 5315388), (6, 3543592), (8, 2657694), (12, 1771796), (13, 1635504), (16, 1328847), (24, 885898), (26, 817752), (39, 545168), (48, 442949), (52, 408876), (78, 272584), (104, 204438), (156, 136292), (169, 125808), (208, 102219), (312, 68146), (338, 62904), (507, 41936), (624, 34073), (676, 31452), (1014, 20968), (1352, 15726), (2028, 10484), (2621, 8112), (2704, 7863), (4056, 5242)]