21459324

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 51528960

約数和(自身を除く): 30069636

約数列:

[1, 2, 3, 4, 6, 12, 71, 89, 142, 178, 213, 267, 283, 284, 356, 426, 534, 566, 849, 852, 1068, 1132, 1698, 3396, 6319, 12638, 18957, 20093, 25187, 25276, 37914, 40186, 50374, 60279, 75561, 75828, 80372, 100748, 120558, 151122, 241116, 302244, 1788277, 3576554, 5364831, 7153108, 10729662, 21459324]

約数ペア:

[(1, 21459324), (2, 10729662), (3, 7153108), (4, 5364831), (6, 3576554), (12, 1788277), (71, 302244), (89, 241116), (142, 151122), (178, 120558), (213, 100748), (267, 80372), (283, 75828), (284, 75561), (356, 60279), (426, 50374), (534, 40186), (566, 37914), (849, 25276), (852, 25187), (1068, 20093), (1132, 18957), (1698, 12638), (3396, 6319)]