128649920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{727}}^1$

素因数の和:830

約数の個数: 112

約数和(自身を含む): 355031040

約数和(自身を除く): 226381120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 112, 140, 158, 160, 224, 280, 316, 320, 395, 448, 553, 560, 632, 727, 790, 1106, 1120, 1264, 1454, 1580, 2212, 2240, 2528, 2765, 2908, 3160, 3635, 4424, 5056, 5089, 5530, 5816, 6320, 7270, 8848, 10178, 11060, 11632, 12640, 14540, 17696, 20356, 22120, 23264, 25280, 25445, 29080, 35392, 40712, 44240, 46528, 50890, 57433, 58160, 81424, 88480, 101780, 114866, 116320, 162848, 176960, 203560, 229732, 232640, 287165, 325696, 402031, 407120, 459464, 574330, 804062, 814240, 918928, 1148660, 1608124, 1628480, 1837856, 2010155, 2297320, 3216248, 3675712, 4020310, 4594640, 6432496, 8040620, 9189280, 12864992, 16081240, 18378560, 25729984, 32162480, 64324960, 128649920]

約数ペア:

[(1, 128649920), (2, 64324960), (4, 32162480), (5, 25729984), (7, 18378560), (8, 16081240), (10, 12864992), (14, 9189280), (16, 8040620), (20, 6432496), (28, 4594640), (32, 4020310), (35, 3675712), (40, 3216248), (56, 2297320), (64, 2010155), (70, 1837856), (79, 1628480), (80, 1608124), (112, 1148660), (140, 918928), (158, 814240), (160, 804062), (224, 574330), (280, 459464), (316, 407120), (320, 402031), (395, 325696), (448, 287165), (553, 232640), (560, 229732), (632, 203560), (727, 176960), (790, 162848), (1106, 116320), (1120, 114866), (1264, 101780), (1454, 88480), (1580, 81424), (2212, 58160), (2240, 57433), (2528, 50890), (2765, 46528), (2908, 44240), (3160, 40712), (3635, 35392), (4424, 29080), (5056, 25445), (5089, 25280), (5530, 23264), (5816, 22120), (6320, 20356), (7270, 17696), (8848, 14540), (10178, 12640), (11060, 11632)]