638391680

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1472

約数の個数: 128

約数和(自身を含む): 1645056000

約数和(自身を除く): 1006664320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 230, 248, 310, 320, 368, 460, 496, 620, 640, 713, 736, 920, 992, 1240, 1399, 1426, 1472, 1840, 1984, 2480, 2798, 2852, 2944, 3565, 3680, 3968, 4960, 5596, 5704, 6995, 7130, 7360, 9920, 11192, 11408, 13990, 14260, 14720, 19840, 22384, 22816, 27980, 28520, 32177, 43369, 44768, 45632, 55960, 57040, 64354, 86738, 89536, 91264, 111920, 114080, 128708, 160885, 173476, 179072, 216845, 223840, 228160, 257416, 321770, 346952, 433690, 447680, 456320, 514832, 643540, 693904, 867380, 895360, 997487, 1029664, 1287080, 1387808, 1734760, 1994974, 2059328, 2574160, 2775616, 3469520, 3989948, 4118656, 4987435, 5148320, 5551232, 6939040, 7979896, 9974870, 10296640, 13878080, 15959792, 19949740, 20593280, 27756160, 31919584, 39899480, 63839168, 79798960, 127678336, 159597920, 319195840, 638391680]

約数ペア:

[(1, 638391680), (2, 319195840), (4, 159597920), (5, 127678336), (8, 79798960), (10, 63839168), (16, 39899480), (20, 31919584), (23, 27756160), (31, 20593280), (32, 19949740), (40, 15959792), (46, 13878080), (62, 10296640), (64, 9974870), (80, 7979896), (92, 6939040), (115, 5551232), (124, 5148320), (128, 4987435), (155, 4118656), (160, 3989948), (184, 3469520), (230, 2775616), (248, 2574160), (310, 2059328), (320, 1994974), (368, 1734760), (460, 1387808), (496, 1287080), (620, 1029664), (640, 997487), (713, 895360), (736, 867380), (920, 693904), (992, 643540), (1240, 514832), (1399, 456320), (1426, 447680), (1472, 433690), (1840, 346952), (1984, 321770), (2480, 257416), (2798, 228160), (2852, 223840), (2944, 216845), (3565, 179072), (3680, 173476), (3968, 160885), (4960, 128708), (5596, 114080), (5704, 111920), (6995, 91264), (7130, 89536), (7360, 86738), (9920, 64354), (11192, 57040), (11408, 55960), (13990, 45632), (14260, 44768), (14720, 43369), (19840, 32177), (22384, 28520), (22816, 27980)]