128985920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{647}}^1$

素因数の和:760

約数の個数: 112

約数和(自身を含む): 355518720

約数和(自身を除く): 226532800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 112, 140, 160, 178, 224, 280, 320, 356, 445, 448, 560, 623, 647, 712, 890, 1120, 1246, 1294, 1424, 1780, 2240, 2492, 2588, 2848, 3115, 3235, 3560, 4529, 4984, 5176, 5696, 6230, 6470, 7120, 9058, 9968, 10352, 12460, 12940, 14240, 18116, 19936, 20704, 22645, 24920, 25880, 28480, 36232, 39872, 41408, 45290, 49840, 51760, 57583, 72464, 90580, 99680, 103520, 115166, 144928, 181160, 199360, 207040, 230332, 287915, 289856, 362320, 403081, 460664, 575830, 724640, 806162, 921328, 1151660, 1449280, 1612324, 1842656, 2015405, 2303320, 3224648, 3685312, 4030810, 4606640, 6449296, 8061620, 9213280, 12898592, 16123240, 18426560, 25797184, 32246480, 64492960, 128985920]

約数ペア:

[(1, 128985920), (2, 64492960), (4, 32246480), (5, 25797184), (7, 18426560), (8, 16123240), (10, 12898592), (14, 9213280), (16, 8061620), (20, 6449296), (28, 4606640), (32, 4030810), (35, 3685312), (40, 3224648), (56, 2303320), (64, 2015405), (70, 1842656), (80, 1612324), (89, 1449280), (112, 1151660), (140, 921328), (160, 806162), (178, 724640), (224, 575830), (280, 460664), (320, 403081), (356, 362320), (445, 289856), (448, 287915), (560, 230332), (623, 207040), (647, 199360), (712, 181160), (890, 144928), (1120, 115166), (1246, 103520), (1294, 99680), (1424, 90580), (1780, 72464), (2240, 57583), (2492, 51760), (2588, 49840), (2848, 45290), (3115, 41408), (3235, 39872), (3560, 36232), (4529, 28480), (4984, 25880), (5176, 24920), (5696, 22645), (6230, 20704), (6470, 19936), (7120, 18116), (9058, 14240), (9968, 12940), (10352, 12460)]