21951780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5153}}^1$

素因数の和:5236

約数の個数: 48

約数和(自身を含む): 62342784

約数和(自身を除く): 40391004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5153, 10306, 15459, 20612, 25765, 30918, 51530, 61836, 77295, 103060, 154590, 309180, 365863, 731726, 1097589, 1463452, 1829315, 2195178, 3658630, 4390356, 5487945, 7317260, 10975890, 21951780]

約数ペア:

[(1, 21951780), (2, 10975890), (3, 7317260), (4, 5487945), (5, 4390356), (6, 3658630), (10, 2195178), (12, 1829315), (15, 1463452), (20, 1097589), (30, 731726), (60, 365863), (71, 309180), (142, 154590), (213, 103060), (284, 77295), (355, 61836), (426, 51530), (710, 30918), (852, 25765), (1065, 20612), (1420, 15459), (2130, 10306), (4260, 5153)]