261121920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{443}}^1$

素因数の和:772

約数の個数: 128

約数和(自身を含む): 836922240

約数和(自身を除く): 575800320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 307, 320, 384, 443, 480, 614, 640, 886, 921, 960, 1228, 1329, 1535, 1772, 1842, 1920, 2215, 2456, 2658, 3070, 3544, 3684, 4430, 4605, 4912, 5316, 6140, 6645, 7088, 7368, 8860, 9210, 9824, 10632, 12280, 13290, 14176, 14736, 17720, 18420, 19648, 21264, 24560, 26580, 28352, 29472, 35440, 36840, 39296, 42528, 49120, 53160, 56704, 58944, 70880, 73680, 85056, 98240, 106320, 117888, 136001, 141760, 147360, 170112, 196480, 212640, 272002, 283520, 294720, 408003, 425280, 544004, 589440, 680005, 816006, 850560, 1088008, 1360010, 1632012, 2040015, 2176016, 2720020, 3264024, 4080030, 4352032, 5440040, 6528048, 8160060, 8704064, 10880080, 13056096, 16320120, 17408128, 21760160, 26112192, 32640240, 43520320, 52224384, 65280480, 87040640, 130560960, 261121920]

約数ペア:

[(1, 261121920), (2, 130560960), (3, 87040640), (4, 65280480), (5, 52224384), (6, 43520320), (8, 32640240), (10, 26112192), (12, 21760160), (15, 17408128), (16, 16320120), (20, 13056096), (24, 10880080), (30, 8704064), (32, 8160060), (40, 6528048), (48, 5440040), (60, 4352032), (64, 4080030), (80, 3264024), (96, 2720020), (120, 2176016), (128, 2040015), (160, 1632012), (192, 1360010), (240, 1088008), (307, 850560), (320, 816006), (384, 680005), (443, 589440), (480, 544004), (614, 425280), (640, 408003), (886, 294720), (921, 283520), (960, 272002), (1228, 212640), (1329, 196480), (1535, 170112), (1772, 147360), (1842, 141760), (1920, 136001), (2215, 117888), (2456, 106320), (2658, 98240), (3070, 85056), (3544, 73680), (3684, 70880), (4430, 58944), (4605, 56704), (4912, 53160), (5316, 49120), (6140, 42528), (6645, 39296), (7088, 36840), (7368, 35440), (8860, 29472), (9210, 28352), (9824, 26580), (10632, 24560), (12280, 21264), (13290, 19648), (14176, 18420), (14736, 17720)]