64639820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{929}}^1$

素因数の和:1023

約数の個数: 72

約数和(自身を含む): 160302240

約数和(自身を除く): 95662420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 929, 980, 994, 1420, 1858, 1988, 2485, 3479, 3716, 4645, 4970, 6503, 6958, 9290, 9940, 13006, 13916, 17395, 18580, 26012, 32515, 34790, 45521, 65030, 65959, 69580, 91042, 130060, 131918, 182084, 227605, 263836, 329795, 455210, 461713, 659590, 910420, 923426, 1319180, 1846852, 2308565, 3231991, 4617130, 6463982, 9234260, 12927964, 16159955, 32319910, 64639820]

約数ペア:

[(1, 64639820), (2, 32319910), (4, 16159955), (5, 12927964), (7, 9234260), (10, 6463982), (14, 4617130), (20, 3231991), (28, 2308565), (35, 1846852), (49, 1319180), (70, 923426), (71, 910420), (98, 659590), (140, 461713), (142, 455210), (196, 329795), (245, 263836), (284, 227605), (355, 182084), (490, 131918), (497, 130060), (710, 91042), (929, 69580), (980, 65959), (994, 65030), (1420, 45521), (1858, 34790), (1988, 32515), (2485, 26012), (3479, 18580), (3716, 17395), (4645, 13916), (4970, 13006), (6503, 9940), (6958, 9290)]