1991878984

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{1831}}^1$

素因数の和:2294

約数の個数: 64

約数和(自身を含む): 4174761600

約数和(自身を除く): 2182882616

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 421, 646, 842, 1292, 1684, 1831, 2584, 3368, 3662, 7157, 7324, 7999, 14314, 14648, 15998, 28628, 31127, 31996, 34789, 57256, 62254, 63992, 69578, 124508, 135983, 139156, 249016, 271966, 278312, 543932, 591413, 770851, 1087864, 1182826, 1541702, 2365652, 3083404, 4731304, 6166808, 13104467, 14646169, 26208934, 29292338, 52417868, 58584676, 104835736, 117169352, 248984873, 497969746, 995939492, 1991878984]

約数ペア:

[(1, 1991878984), (2, 995939492), (4, 497969746), (8, 248984873), (17, 117169352), (19, 104835736), (34, 58584676), (38, 52417868), (68, 29292338), (76, 26208934), (136, 14646169), (152, 13104467), (323, 6166808), (421, 4731304), (646, 3083404), (842, 2365652), (1292, 1541702), (1684, 1182826), (1831, 1087864), (2584, 770851), (3368, 591413), (3662, 543932), (7157, 278312), (7324, 271966), (7999, 249016), (14314, 139156), (14648, 135983), (15998, 124508), (28628, 69578), (31127, 63992), (31996, 62254), (34789, 57256)]