66686920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{349}}^1$

素因数の和:658

約数の個数: 64

約数和(自身を含む): 159894000

約数和(自身を除く): 93207080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 281, 340, 349, 562, 680, 698, 1124, 1396, 1405, 1745, 2248, 2792, 2810, 3490, 4777, 5620, 5933, 6980, 9554, 11240, 11866, 13960, 19108, 23732, 23885, 29665, 38216, 47464, 47770, 59330, 95540, 98069, 118660, 191080, 196138, 237320, 392276, 490345, 784552, 980690, 1667173, 1961380, 3334346, 3922760, 6668692, 8335865, 13337384, 16671730, 33343460, 66686920]

約数ペア:

[(1, 66686920), (2, 33343460), (4, 16671730), (5, 13337384), (8, 8335865), (10, 6668692), (17, 3922760), (20, 3334346), (34, 1961380), (40, 1667173), (68, 980690), (85, 784552), (136, 490345), (170, 392276), (281, 237320), (340, 196138), (349, 191080), (562, 118660), (680, 98069), (698, 95540), (1124, 59330), (1396, 47770), (1405, 47464), (1745, 38216), (2248, 29665), (2792, 23885), (2810, 23732), (3490, 19108), (4777, 13960), (5620, 11866), (5933, 11240), (6980, 9554)]