21931880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{769}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 31290520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 155, 184, 230, 248, 310, 460, 620, 713, 769, 920, 1240, 1426, 1538, 2852, 3076, 3565, 3845, 5704, 6152, 7130, 7690, 14260, 15380, 17687, 23839, 28520, 30760, 35374, 47678, 70748, 88435, 95356, 119195, 141496, 176870, 190712, 238390, 353740, 476780, 548297, 707480, 953560, 1096594, 2193188, 2741485, 4386376, 5482970, 10965940, 21931880]

約数ペア:

[(1, 21931880), (2, 10965940), (4, 5482970), (5, 4386376), (8, 2741485), (10, 2193188), (20, 1096594), (23, 953560), (31, 707480), (40, 548297), (46, 476780), (62, 353740), (92, 238390), (115, 190712), (124, 176870), (155, 141496), (184, 119195), (230, 95356), (248, 88435), (310, 70748), (460, 47678), (620, 35374), (713, 30760), (769, 28520), (920, 23839), (1240, 17687), (1426, 15380), (1538, 14260), (2852, 7690), (3076, 7130), (3565, 6152), (3845, 5704)]