2161720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^3$

素因数の和:73

約数の個数: 64

約数和(自身を含む): 5637600

約数和(自身を除く): 3475880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 289, 340, 374, 440, 578, 680, 748, 935, 1156, 1445, 1496, 1870, 2312, 2890, 3179, 3740, 4913, 5780, 6358, 7480, 9826, 11560, 12716, 15895, 19652, 24565, 25432, 31790, 39304, 49130, 54043, 63580, 98260, 108086, 127160, 196520, 216172, 270215, 432344, 540430, 1080860, 2161720]

約数ペア:

[(1, 2161720), (2, 1080860), (4, 540430), (5, 432344), (8, 270215), (10, 216172), (11, 196520), (17, 127160), (20, 108086), (22, 98260), (34, 63580), (40, 54043), (44, 49130), (55, 39304), (68, 31790), (85, 25432), (88, 24565), (110, 19652), (136, 15895), (170, 12716), (187, 11560), (220, 9826), (289, 7480), (340, 6358), (374, 5780), (440, 4913), (578, 3740), (680, 3179), (748, 2890), (935, 2312), (1156, 1870), (1445, 1496)]