18219784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:694

約数の個数: 64

約数和(自身を含む): 41601600

約数和(自身を除く): 23381816

約数列:

[1, 2, 4, 8, 11, 17, 19, 22, 34, 38, 44, 68, 76, 88, 136, 152, 187, 209, 323, 374, 418, 641, 646, 748, 836, 1282, 1292, 1496, 1672, 2564, 2584, 3553, 5128, 7051, 7106, 10897, 12179, 14102, 14212, 21794, 24358, 28204, 28424, 43588, 48716, 56408, 87176, 97432, 119867, 133969, 207043, 239734, 267938, 414086, 479468, 535876, 828172, 958936, 1071752, 1656344, 2277473, 4554946, 9109892, 18219784]

約数ペア:

[(1, 18219784), (2, 9109892), (4, 4554946), (8, 2277473), (11, 1656344), (17, 1071752), (19, 958936), (22, 828172), (34, 535876), (38, 479468), (44, 414086), (68, 267938), (76, 239734), (88, 207043), (136, 133969), (152, 119867), (187, 97432), (209, 87176), (323, 56408), (374, 48716), (418, 43588), (641, 28424), (646, 28204), (748, 24358), (836, 21794), (1282, 14212), (1292, 14102), (1496, 12179), (1672, 10897), (2564, 7106), (2584, 7051), (3553, 5128)]