21775640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1033}}^1$

素因数の和:1092

約数の個数: 64

約数和(自身を含む): 53602560

約数和(自身を除く): 31826920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 527, 620, 680, 1033, 1054, 1240, 2066, 2108, 2635, 4132, 4216, 5165, 5270, 8264, 10330, 10540, 17561, 20660, 21080, 32023, 35122, 41320, 64046, 70244, 87805, 128092, 140488, 160115, 175610, 256184, 320230, 351220, 544391, 640460, 702440, 1088782, 1280920, 2177564, 2721955, 4355128, 5443910, 10887820, 21775640]

約数ペア:

[(1, 21775640), (2, 10887820), (4, 5443910), (5, 4355128), (8, 2721955), (10, 2177564), (17, 1280920), (20, 1088782), (31, 702440), (34, 640460), (40, 544391), (62, 351220), (68, 320230), (85, 256184), (124, 175610), (136, 160115), (155, 140488), (170, 128092), (248, 87805), (310, 70244), (340, 64046), (527, 41320), (620, 35122), (680, 32023), (1033, 21080), (1054, 20660), (1240, 17561), (2066, 10540), (2108, 10330), (2635, 8264), (4132, 5270), (4216, 5165)]