21190338

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{661}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 49880376

約数和(自身を除く): 28690038

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 137, 234, 274, 411, 661, 822, 1233, 1322, 1781, 1983, 2466, 3562, 3966, 5343, 5949, 8593, 10686, 11898, 16029, 17186, 25779, 32058, 51558, 77337, 90557, 154674, 181114, 271671, 543342, 815013, 1177241, 1630026, 2354482, 3531723, 7063446, 10595169, 21190338]

約数ペア:

[(1, 21190338), (2, 10595169), (3, 7063446), (6, 3531723), (9, 2354482), (13, 1630026), (18, 1177241), (26, 815013), (39, 543342), (78, 271671), (117, 181114), (137, 154674), (234, 90557), (274, 77337), (411, 51558), (661, 32058), (822, 25779), (1233, 17186), (1322, 16029), (1781, 11898), (1983, 10686), (2466, 8593), (3562, 5949), (3966, 5343)]