21655760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38671}}^1$

素因数の和:38691

約数の個数: 40

約数和(自身を含む): 57543936

約数和(自身を除く): 35888176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38671, 77342, 154684, 193355, 270697, 309368, 386710, 541394, 618736, 773420, 1082788, 1353485, 1546840, 2165576, 2706970, 3093680, 4331152, 5413940, 10827880, 21655760]

約数ペア:

[(1, 21655760), (2, 10827880), (4, 5413940), (5, 4331152), (7, 3093680), (8, 2706970), (10, 2165576), (14, 1546840), (16, 1353485), (20, 1082788), (28, 773420), (35, 618736), (40, 541394), (56, 386710), (70, 309368), (80, 270697), (112, 193355), (140, 154684), (280, 77342), (560, 38671)]