391991838

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:262

約数の個数: 128

約数和(自身を含む): 971243520

約数和(自身を除く): 579251682

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 37, 42, 62, 74, 79, 93, 103, 111, 158, 186, 206, 217, 222, 237, 259, 309, 434, 474, 518, 553, 618, 651, 721, 777, 1106, 1147, 1302, 1442, 1554, 1659, 2163, 2294, 2449, 2923, 3193, 3318, 3441, 3811, 4326, 4898, 5846, 6386, 6882, 7347, 7622, 8029, 8137, 8769, 9579, 11433, 14694, 16058, 16274, 17143, 17538, 19158, 20461, 22351, 22866, 24087, 24411, 26677, 34286, 40922, 44702, 48174, 48822, 51429, 53354, 56959, 61383, 67053, 80031, 90613, 102858, 113918, 118141, 122766, 134106, 160062, 170877, 181226, 236282, 252247, 271839, 301069, 341754, 354423, 504494, 543678, 602138, 634291, 708846, 756741, 826987, 903207, 1268582, 1513482, 1653974, 1765729, 1806414, 1902873, 2107483, 2480961, 3531458, 3805746, 4214966, 4961922, 5297187, 6322449, 9333139, 10594374, 12644898, 18666278, 27999417, 55998834, 65331973, 130663946, 195995919, 391991838]

約数ペア:

[(1, 391991838), (2, 195995919), (3, 130663946), (6, 65331973), (7, 55998834), (14, 27999417), (21, 18666278), (31, 12644898), (37, 10594374), (42, 9333139), (62, 6322449), (74, 5297187), (79, 4961922), (93, 4214966), (103, 3805746), (111, 3531458), (158, 2480961), (186, 2107483), (206, 1902873), (217, 1806414), (222, 1765729), (237, 1653974), (259, 1513482), (309, 1268582), (434, 903207), (474, 826987), (518, 756741), (553, 708846), (618, 634291), (651, 602138), (721, 543678), (777, 504494), (1106, 354423), (1147, 341754), (1302, 301069), (1442, 271839), (1554, 252247), (1659, 236282), (2163, 181226), (2294, 170877), (2449, 160062), (2923, 134106), (3193, 122766), (3318, 118141), (3441, 113918), (3811, 102858), (4326, 90613), (4898, 80031), (5846, 67053), (6386, 61383), (6882, 56959), (7347, 53354), (7622, 51429), (8029, 48822), (8137, 48174), (8769, 44702), (9579, 40922), (11433, 34286), (14694, 26677), (16058, 24411), (16274, 24087), (17143, 22866), (17538, 22351), (19158, 20461)]