21437680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1433}}^1$

素因数の和:1474

約数の個数: 80

約数和(自身を含む): 57612384

約数和(自身を除く): 36174704

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1433, 1496, 1870, 2866, 2992, 3740, 5732, 7165, 7480, 11464, 14330, 14960, 15763, 22928, 24361, 28660, 31526, 48722, 57320, 63052, 78815, 97444, 114640, 121805, 126104, 157630, 194888, 243610, 252208, 267971, 315260, 389776, 487220, 535942, 630520, 974440, 1071884, 1261040, 1339855, 1948880, 2143768, 2679710, 4287536, 5359420, 10718840, 21437680]

約数ペア:

[(1, 21437680), (2, 10718840), (4, 5359420), (5, 4287536), (8, 2679710), (10, 2143768), (11, 1948880), (16, 1339855), (17, 1261040), (20, 1071884), (22, 974440), (34, 630520), (40, 535942), (44, 487220), (55, 389776), (68, 315260), (80, 267971), (85, 252208), (88, 243610), (110, 194888), (136, 157630), (170, 126104), (176, 121805), (187, 114640), (220, 97444), (272, 78815), (340, 63052), (374, 57320), (440, 48722), (680, 31526), (748, 28660), (880, 24361), (935, 22928), (1360, 15763), (1433, 14960), (1496, 14330), (1870, 11464), (2866, 7480), (2992, 7165), (3740, 5732)]