128631520

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:201

約数の個数: 144

約数和(自身を含む): 342186768

約数和(自身を除く): 213555248

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 85, 95, 131, 136, 152, 160, 170, 190, 262, 272, 304, 323, 340, 361, 380, 524, 544, 608, 646, 655, 680, 722, 760, 1048, 1292, 1310, 1360, 1444, 1520, 1615, 1805, 2096, 2227, 2489, 2584, 2620, 2720, 2888, 3040, 3230, 3610, 4192, 4454, 4978, 5168, 5240, 5776, 6137, 6460, 7220, 8908, 9956, 10336, 10480, 11135, 11552, 12274, 12445, 12920, 14440, 17816, 19912, 20960, 22270, 24548, 24890, 25840, 28880, 30685, 35632, 39824, 42313, 44540, 47291, 49096, 49780, 51680, 57760, 61370, 71264, 79648, 84626, 89080, 94582, 98192, 99560, 122740, 169252, 178160, 189164, 196384, 199120, 211565, 236455, 245480, 338504, 356320, 378328, 398240, 423130, 472910, 490960, 677008, 756656, 803947, 846260, 945820, 981920, 1354016, 1513312, 1607894, 1692520, 1891640, 3215788, 3385040, 3783280, 4019735, 6431576, 6770080, 7566560, 8039470, 12863152, 16078940, 25726304, 32157880, 64315760, 128631520]

約数ペア:

[(1, 128631520), (2, 64315760), (4, 32157880), (5, 25726304), (8, 16078940), (10, 12863152), (16, 8039470), (17, 7566560), (19, 6770080), (20, 6431576), (32, 4019735), (34, 3783280), (38, 3385040), (40, 3215788), (68, 1891640), (76, 1692520), (80, 1607894), (85, 1513312), (95, 1354016), (131, 981920), (136, 945820), (152, 846260), (160, 803947), (170, 756656), (190, 677008), (262, 490960), (272, 472910), (304, 423130), (323, 398240), (340, 378328), (361, 356320), (380, 338504), (524, 245480), (544, 236455), (608, 211565), (646, 199120), (655, 196384), (680, 189164), (722, 178160), (760, 169252), (1048, 122740), (1292, 99560), (1310, 98192), (1360, 94582), (1444, 89080), (1520, 84626), (1615, 79648), (1805, 71264), (2096, 61370), (2227, 57760), (2489, 51680), (2584, 49780), (2620, 49096), (2720, 47291), (2888, 44540), (3040, 42313), (3230, 39824), (3610, 35632), (4192, 30685), (4454, 28880), (4978, 25840), (5168, 24890), (5240, 24548), (5776, 22270), (6137, 20960), (6460, 19912), (7220, 17816), (8908, 14440), (9956, 12920), (10336, 12445), (10480, 12274), (11135, 11552)]