12718940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 29883168

約数和(自身を除く): 17164228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 71, 106, 130, 142, 169, 212, 260, 265, 284, 338, 355, 530, 676, 689, 710, 845, 923, 1060, 1378, 1420, 1690, 1846, 2756, 3380, 3445, 3692, 3763, 4615, 6890, 7526, 8957, 9230, 11999, 13780, 15052, 17914, 18460, 18815, 23998, 35828, 37630, 44785, 47996, 48919, 59995, 75260, 89570, 97838, 119990, 179140, 195676, 239980, 244595, 489190, 635947, 978380, 1271894, 2543788, 3179735, 6359470, 12718940]

約数ペア:

[(1, 12718940), (2, 6359470), (4, 3179735), (5, 2543788), (10, 1271894), (13, 978380), (20, 635947), (26, 489190), (52, 244595), (53, 239980), (65, 195676), (71, 179140), (106, 119990), (130, 97838), (142, 89570), (169, 75260), (212, 59995), (260, 48919), (265, 47996), (284, 44785), (338, 37630), (355, 35828), (530, 23998), (676, 18815), (689, 18460), (710, 17914), (845, 15052), (923, 13780), (1060, 11999), (1378, 9230), (1420, 8957), (1690, 7526), (1846, 6890), (2756, 4615), (3380, 3763), (3445, 3692)]