19907272

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1901}}^1$

素因数の和:1942

約数の個数: 64

約数和(自身を含む): 49299840

約数和(自身を除く): 29392568

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 136, 154, 187, 238, 308, 374, 476, 616, 748, 952, 1309, 1496, 1901, 2618, 3802, 5236, 7604, 10472, 13307, 15208, 20911, 26614, 32317, 41822, 53228, 64634, 83644, 106456, 129268, 146377, 167288, 226219, 258536, 292754, 355487, 452438, 585508, 710974, 904876, 1171016, 1421948, 1809752, 2488409, 2843896, 4976818, 9953636, 19907272]

約数ペア:

[(1, 19907272), (2, 9953636), (4, 4976818), (7, 2843896), (8, 2488409), (11, 1809752), (14, 1421948), (17, 1171016), (22, 904876), (28, 710974), (34, 585508), (44, 452438), (56, 355487), (68, 292754), (77, 258536), (88, 226219), (119, 167288), (136, 146377), (154, 129268), (187, 106456), (238, 83644), (308, 64634), (374, 53228), (476, 41822), (616, 32317), (748, 26614), (952, 20911), (1309, 15208), (1496, 13307), (1901, 10472), (2618, 7604), (3802, 5236)]