21459760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38321}}^1$

素因数の和:38341

約数の個数: 40

約数和(自身を含む): 57023136

約数和(自身を除く): 35563376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38321, 76642, 153284, 191605, 268247, 306568, 383210, 536494, 613136, 766420, 1072988, 1341235, 1532840, 2145976, 2682470, 3065680, 4291952, 5364940, 10729880, 21459760]

約数ペア:

[(1, 21459760), (2, 10729880), (4, 5364940), (5, 4291952), (7, 3065680), (8, 2682470), (10, 2145976), (14, 1532840), (16, 1341235), (20, 1072988), (28, 766420), (35, 613136), (40, 536494), (56, 383210), (70, 306568), (80, 268247), (112, 191605), (140, 153284), (280, 76642), (560, 38321)]