21882280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2570

約数の個数: 64

約数和(自身を含む): 58106880

約数和(自身を除く): 36224600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2521, 4340, 5042, 8680, 10084, 12605, 17647, 20168, 25210, 35294, 50420, 70588, 78151, 88235, 100840, 141176, 156302, 176470, 312604, 352940, 390755, 547057, 625208, 705880, 781510, 1094114, 1563020, 2188228, 2735285, 3126040, 4376456, 5470570, 10941140, 21882280]

約数ペア:

[(1, 21882280), (2, 10941140), (4, 5470570), (5, 4376456), (7, 3126040), (8, 2735285), (10, 2188228), (14, 1563020), (20, 1094114), (28, 781510), (31, 705880), (35, 625208), (40, 547057), (56, 390755), (62, 352940), (70, 312604), (124, 176470), (140, 156302), (155, 141176), (217, 100840), (248, 88235), (280, 78151), (310, 70588), (434, 50420), (620, 35294), (868, 25210), (1085, 20168), (1240, 17647), (1736, 12605), (2170, 10084), (2521, 8680), (4340, 5042)]