20517240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4621}}^1$

素因数の和:4672

約数の個数: 64

約数和(自身を含む): 63228960

約数和(自身を除く): 42711720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4621, 9242, 13863, 18484, 23105, 27726, 36968, 46210, 55452, 69315, 92420, 110904, 138630, 170977, 184840, 277260, 341954, 512931, 554520, 683908, 854885, 1025862, 1367816, 1709770, 2051724, 2564655, 3419540, 4103448, 5129310, 6839080, 10258620, 20517240]

約数ペア:

[(1, 20517240), (2, 10258620), (3, 6839080), (4, 5129310), (5, 4103448), (6, 3419540), (8, 2564655), (10, 2051724), (12, 1709770), (15, 1367816), (20, 1025862), (24, 854885), (30, 683908), (37, 554520), (40, 512931), (60, 341954), (74, 277260), (111, 184840), (120, 170977), (148, 138630), (185, 110904), (222, 92420), (296, 69315), (370, 55452), (444, 46210), (555, 36968), (740, 27726), (888, 23105), (1110, 18484), (1480, 13863), (2220, 9242), (4440, 4621)]