21968520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{26153}}^1$

素因数の和:26174

約数の個数: 64

約数和(自身を含む): 75323520

約数和(自身を除く): 53355000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 26153, 52306, 78459, 104612, 130765, 156918, 183071, 209224, 261530, 313836, 366142, 392295, 523060, 549213, 627672, 732284, 784590, 915355, 1046120, 1098426, 1464568, 1569180, 1830710, 2196852, 2746065, 3138360, 3661420, 4393704, 5492130, 7322840, 10984260, 21968520]

約数ペア:

[(1, 21968520), (2, 10984260), (3, 7322840), (4, 5492130), (5, 4393704), (6, 3661420), (7, 3138360), (8, 2746065), (10, 2196852), (12, 1830710), (14, 1569180), (15, 1464568), (20, 1098426), (21, 1046120), (24, 915355), (28, 784590), (30, 732284), (35, 627672), (40, 549213), (42, 523060), (56, 392295), (60, 366142), (70, 313836), (84, 261530), (105, 209224), (120, 183071), (140, 156918), (168, 130765), (210, 104612), (280, 78459), (420, 52306), (840, 26153)]