16661428

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 37134720

約数和(自身を除く): 20473292

約数列:

[1, 2, 4, 7, 14, 17, 28, 29, 34, 58, 68, 71, 116, 119, 142, 203, 238, 284, 289, 406, 476, 493, 497, 578, 812, 986, 994, 1156, 1207, 1972, 1988, 2023, 2059, 2414, 3451, 4046, 4118, 4828, 6902, 8092, 8236, 8381, 8449, 13804, 14413, 16762, 16898, 20519, 28826, 33524, 33796, 35003, 41038, 57652, 58667, 70006, 82076, 117334, 140012, 143633, 234668, 245021, 287266, 490042, 574532, 595051, 980084, 1190102, 2380204, 4165357, 8330714, 16661428]

約数ペア:

[(1, 16661428), (2, 8330714), (4, 4165357), (7, 2380204), (14, 1190102), (17, 980084), (28, 595051), (29, 574532), (34, 490042), (58, 287266), (68, 245021), (71, 234668), (116, 143633), (119, 140012), (142, 117334), (203, 82076), (238, 70006), (284, 58667), (289, 57652), (406, 41038), (476, 35003), (493, 33796), (497, 33524), (578, 28826), (812, 20519), (986, 16898), (994, 16762), (1156, 14413), (1207, 13804), (1972, 8449), (1988, 8381), (2023, 8236), (2059, 8092), (2414, 6902), (3451, 4828), (4046, 4118)]