20954940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4919}}^1$

素因数の和:5002

約数の個数: 48

約数和(自身を含む): 59512320

約数和(自身を除く): 38557380

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, 4919, 9838, 14757, 19676, 24595, 29514, 49190, 59028, 73785, 98380, 147570, 295140, 349249, 698498, 1047747, 1396996, 1746245, 2095494, 3492490, 4190988, 5238735, 6984980, 10477470, 20954940]

約数ペア:

[(1, 20954940), (2, 10477470), (3, 6984980), (4, 5238735), (5, 4190988), (6, 3492490), (10, 2095494), (12, 1746245), (15, 1396996), (20, 1047747), (30, 698498), (60, 349249), (71, 295140), (142, 147570), (213, 98380), (284, 73785), (355, 59028), (426, 49190), (710, 29514), (852, 24595), (1065, 19676), (1420, 14757), (2130, 9838), (4260, 4919)]