256940880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{152941}}^1$

素因数の和:152964

約数の個数: 80

約数和(自身を含む): 910310784

約数和(自身を除く): 653369904

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 152941, 305882, 458823, 611764, 764705, 917646, 1070587, 1223528, 1529410, 1835292, 2141174, 2294115, 2447056, 3058820, 3211761, 3670584, 4282348, 4588230, 5352935, 6117640, 6423522, 7341168, 8564696, 9176460, 10705870, 12235280, 12847044, 16058805, 17129392, 18352920, 21411740, 25694088, 32117610, 36705840, 42823480, 51388176, 64235220, 85646960, 128470440, 256940880]

約数ペア:

[(1, 256940880), (2, 128470440), (3, 85646960), (4, 64235220), (5, 51388176), (6, 42823480), (7, 36705840), (8, 32117610), (10, 25694088), (12, 21411740), (14, 18352920), (15, 17129392), (16, 16058805), (20, 12847044), (21, 12235280), (24, 10705870), (28, 9176460), (30, 8564696), (35, 7341168), (40, 6423522), (42, 6117640), (48, 5352935), (56, 4588230), (60, 4282348), (70, 3670584), (80, 3211761), (84, 3058820), (105, 2447056), (112, 2294115), (120, 2141174), (140, 1835292), (168, 1529410), (210, 1223528), (240, 1070587), (280, 917646), (336, 764705), (420, 611764), (560, 458823), (840, 305882), (1680, 152941)]