18219580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1307}}^1$

素因数の和:1374

約数の個数: 48

約数和(自身を含む): 41531616

約数和(自身を除く): 23312036

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1307, 1394, 2614, 2788, 3485, 5228, 6535, 6970, 13070, 13940, 22219, 26140, 44438, 53587, 88876, 107174, 111095, 214348, 222190, 267935, 444380, 535870, 910979, 1071740, 1821958, 3643916, 4554895, 9109790, 18219580]

約数ペア:

[(1, 18219580), (2, 9109790), (4, 4554895), (5, 3643916), (10, 1821958), (17, 1071740), (20, 910979), (34, 535870), (41, 444380), (68, 267935), (82, 222190), (85, 214348), (164, 111095), (170, 107174), (205, 88876), (340, 53587), (410, 44438), (697, 26140), (820, 22219), (1307, 13940), (1394, 13070), (2614, 6970), (2788, 6535), (3485, 5228)]