18118880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:340

約数の個数: 96

約数和(自身を含む): 47755008

約数和(自身を除く): 29636128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 281, 310, 403, 416, 496, 520, 562, 620, 806, 992, 1040, 1124, 1240, 1405, 1612, 2015, 2080, 2248, 2480, 2810, 3224, 3653, 4030, 4496, 4960, 5620, 6448, 7306, 8060, 8711, 8992, 11240, 12896, 14612, 16120, 17422, 18265, 22480, 29224, 32240, 34844, 36530, 43555, 44960, 58448, 64480, 69688, 73060, 87110, 113243, 116896, 139376, 146120, 174220, 226486, 278752, 292240, 348440, 452972, 566215, 584480, 696880, 905944, 1132430, 1393760, 1811888, 2264860, 3623776, 4529720, 9059440, 18118880]

約数ペア:

[(1, 18118880), (2, 9059440), (4, 4529720), (5, 3623776), (8, 2264860), (10, 1811888), (13, 1393760), (16, 1132430), (20, 905944), (26, 696880), (31, 584480), (32, 566215), (40, 452972), (52, 348440), (62, 292240), (65, 278752), (80, 226486), (104, 174220), (124, 146120), (130, 139376), (155, 116896), (160, 113243), (208, 87110), (248, 73060), (260, 69688), (281, 64480), (310, 58448), (403, 44960), (416, 43555), (496, 36530), (520, 34844), (562, 32240), (620, 29224), (806, 22480), (992, 18265), (1040, 17422), (1124, 16120), (1240, 14612), (1405, 12896), (1612, 11240), (2015, 8992), (2080, 8711), (2248, 8060), (2480, 7306), (2810, 6448), (3224, 5620), (3653, 4960), (4030, 4496)]