256407888

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:521

約数の個数: 160

約数和(自身を含む): 774950400

約数和(自身を除く): 518542512

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 19, 22, 24, 33, 38, 44, 48, 57, 61, 66, 76, 88, 114, 122, 132, 152, 176, 183, 209, 228, 244, 264, 304, 366, 418, 419, 456, 488, 528, 627, 671, 732, 836, 838, 912, 976, 1159, 1254, 1257, 1342, 1464, 1672, 1676, 2013, 2318, 2508, 2514, 2684, 2928, 3344, 3352, 3477, 4026, 4609, 4636, 5016, 5028, 5368, 6704, 6954, 7961, 8052, 9218, 9272, 10032, 10056, 10736, 12749, 13827, 13908, 15922, 16104, 18436, 18544, 20112, 23883, 25498, 25559, 27654, 27816, 31844, 32208, 36872, 38247, 47766, 50996, 51118, 55308, 55632, 63688, 73744, 76494, 76677, 87571, 95532, 101992, 102236, 110616, 127376, 152988, 153354, 175142, 191064, 203984, 204472, 221232, 262713, 281149, 305976, 306708, 350284, 382128, 408944, 485621, 525426, 562298, 611952, 613416, 700568, 843447, 971242, 1050852, 1124596, 1226832, 1401136, 1456863, 1686894, 1942484, 2101704, 2249192, 2913726, 3373788, 3884968, 4203408, 4498384, 5341831, 5827452, 6747576, 7769936, 10683662, 11654904, 13495152, 16025493, 21367324, 23309808, 32050986, 42734648, 64101972, 85469296, 128203944, 256407888]

約数ペア:

[(1, 256407888), (2, 128203944), (3, 85469296), (4, 64101972), (6, 42734648), (8, 32050986), (11, 23309808), (12, 21367324), (16, 16025493), (19, 13495152), (22, 11654904), (24, 10683662), (33, 7769936), (38, 6747576), (44, 5827452), (48, 5341831), (57, 4498384), (61, 4203408), (66, 3884968), (76, 3373788), (88, 2913726), (114, 2249192), (122, 2101704), (132, 1942484), (152, 1686894), (176, 1456863), (183, 1401136), (209, 1226832), (228, 1124596), (244, 1050852), (264, 971242), (304, 843447), (366, 700568), (418, 613416), (419, 611952), (456, 562298), (488, 525426), (528, 485621), (627, 408944), (671, 382128), (732, 350284), (836, 306708), (838, 305976), (912, 281149), (976, 262713), (1159, 221232), (1254, 204472), (1257, 203984), (1342, 191064), (1464, 175142), (1672, 153354), (1676, 152988), (2013, 127376), (2318, 110616), (2508, 102236), (2514, 101992), (2684, 95532), (2928, 87571), (3344, 76677), (3352, 76494), (3477, 73744), (4026, 63688), (4609, 55632), (4636, 55308), (5016, 51118), (5028, 50996), (5368, 47766), (6704, 38247), (6954, 36872), (7961, 32208), (8052, 31844), (9218, 27816), (9272, 27654), (10032, 25559), (10056, 25498), (10736, 23883), (12749, 20112), (13827, 18544), (13908, 18436), (15922, 16104)]