18626860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:335

約数の個数: 72

約数和(自身を含む): 46252080

約数和(自身を除く): 27625220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 140, 166, 196, 229, 245, 332, 415, 458, 490, 581, 830, 916, 980, 1145, 1162, 1603, 1660, 2290, 2324, 2905, 3206, 4067, 4580, 5810, 6412, 8015, 8134, 11221, 11620, 16030, 16268, 19007, 20335, 22442, 32060, 38014, 40670, 44884, 56105, 76028, 81340, 95035, 112210, 133049, 190070, 224420, 266098, 380140, 532196, 665245, 931343, 1330490, 1862686, 2660980, 3725372, 4656715, 9313430, 18626860]

約数ペア:

[(1, 18626860), (2, 9313430), (4, 4656715), (5, 3725372), (7, 2660980), (10, 1862686), (14, 1330490), (20, 931343), (28, 665245), (35, 532196), (49, 380140), (70, 266098), (83, 224420), (98, 190070), (140, 133049), (166, 112210), (196, 95035), (229, 81340), (245, 76028), (332, 56105), (415, 44884), (458, 40670), (490, 38014), (581, 32060), (830, 22442), (916, 20335), (980, 19007), (1145, 16268), (1162, 16030), (1603, 11620), (1660, 11221), (2290, 8134), (2324, 8015), (2905, 6412), (3206, 5810), (4067, 4580)]