20015355080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1091}}^1\times {\mathrm{65521}}^1$

素因数の和:66630

約数の個数: 64

約数和(自身を含む): 51516017280

約数和(自身を除く): 31500662200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1091, 2182, 4364, 5455, 7637, 8728, 10910, 15274, 21820, 30548, 38185, 43640, 61096, 65521, 76370, 131042, 152740, 262084, 305480, 327605, 458647, 524168, 655210, 917294, 1310420, 1834588, 2293235, 2620840, 3669176, 4586470, 9172940, 18345880, 71483411, 142966822, 285933644, 357417055, 500383877, 571867288, 714834110, 1000767754, 1429668220, 2001535508, 2501919385, 2859336440, 4003071016, 5003838770, 10007677540, 20015355080]

約数ペア:

[(1, 20015355080), (2, 10007677540), (4, 5003838770), (5, 4003071016), (7, 2859336440), (8, 2501919385), (10, 2001535508), (14, 1429668220), (20, 1000767754), (28, 714834110), (35, 571867288), (40, 500383877), (56, 357417055), (70, 285933644), (140, 142966822), (280, 71483411), (1091, 18345880), (2182, 9172940), (4364, 4586470), (5455, 3669176), (7637, 2620840), (8728, 2293235), (10910, 1834588), (15274, 1310420), (21820, 917294), (30548, 655210), (38185, 524168), (43640, 458647), (61096, 327605), (65521, 305480), (76370, 262084), (131042, 152740)]