399250240

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:456

約数の個数: 112

約数和(自身を含む): 991355904

約数和(自身を除く): 592105664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 167, 241, 248, 310, 320, 334, 482, 496, 620, 668, 835, 964, 992, 1205, 1240, 1336, 1670, 1928, 1984, 2410, 2480, 2672, 3340, 3856, 4820, 4960, 5177, 5344, 6680, 7471, 7712, 9640, 9920, 10354, 10688, 13360, 14942, 15424, 19280, 20708, 25885, 26720, 29884, 37355, 38560, 40247, 41416, 51770, 53440, 59768, 74710, 77120, 80494, 82832, 103540, 119536, 149420, 160988, 165664, 201235, 207080, 239072, 298840, 321976, 331328, 402470, 414160, 478144, 597680, 643952, 804940, 828320, 1195360, 1247657, 1287904, 1609880, 1656640, 2390720, 2495314, 2575808, 3219760, 4990628, 6238285, 6439520, 9981256, 12476570, 12879040, 19962512, 24953140, 39925024, 49906280, 79850048, 99812560, 199625120, 399250240]

約数ペア:

[(1, 399250240), (2, 199625120), (4, 99812560), (5, 79850048), (8, 49906280), (10, 39925024), (16, 24953140), (20, 19962512), (31, 12879040), (32, 12476570), (40, 9981256), (62, 6439520), (64, 6238285), (80, 4990628), (124, 3219760), (155, 2575808), (160, 2495314), (167, 2390720), (241, 1656640), (248, 1609880), (310, 1287904), (320, 1247657), (334, 1195360), (482, 828320), (496, 804940), (620, 643952), (668, 597680), (835, 478144), (964, 414160), (992, 402470), (1205, 331328), (1240, 321976), (1336, 298840), (1670, 239072), (1928, 207080), (1984, 201235), (2410, 165664), (2480, 160988), (2672, 149420), (3340, 119536), (3856, 103540), (4820, 82832), (4960, 80494), (5177, 77120), (5344, 74710), (6680, 59768), (7471, 53440), (7712, 51770), (9640, 41416), (9920, 40247), (10354, 38560), (10688, 37355), (13360, 29884), (14942, 26720), (15424, 25885), (19280, 20708)]