21715980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2531}}^1$

素因数の和:2567

約数の個数: 96

約数和(自身を含む): 71463168

約数和(自身を除く): 49747188

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 195, 220, 260, 286, 330, 390, 429, 572, 660, 715, 780, 858, 1430, 1716, 2145, 2531, 2860, 4290, 5062, 7593, 8580, 10124, 12655, 15186, 25310, 27841, 30372, 32903, 37965, 50620, 55682, 65806, 75930, 83523, 98709, 111364, 131612, 139205, 151860, 164515, 167046, 197418, 278410, 329030, 334092, 361933, 394836, 417615, 493545, 556820, 658060, 723866, 835230, 987090, 1085799, 1447732, 1670460, 1809665, 1974180, 2171598, 3619330, 4343196, 5428995, 7238660, 10857990, 21715980]

約数ペア:

[(1, 21715980), (2, 10857990), (3, 7238660), (4, 5428995), (5, 4343196), (6, 3619330), (10, 2171598), (11, 1974180), (12, 1809665), (13, 1670460), (15, 1447732), (20, 1085799), (22, 987090), (26, 835230), (30, 723866), (33, 658060), (39, 556820), (44, 493545), (52, 417615), (55, 394836), (60, 361933), (65, 334092), (66, 329030), (78, 278410), (110, 197418), (130, 167046), (132, 164515), (143, 151860), (156, 139205), (165, 131612), (195, 111364), (220, 98709), (260, 83523), (286, 75930), (330, 65806), (390, 55682), (429, 50620), (572, 37965), (660, 32903), (715, 30372), (780, 27841), (858, 25310), (1430, 15186), (1716, 12655), (2145, 10124), (2531, 8580), (2860, 7593), (4290, 5062)]