18619880

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 44979840

約数和(自身を除く): 26359960

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 547, 740, 851, 920, 1094, 1480, 1702, 2188, 2735, 3404, 4255, 4376, 5470, 6808, 8510, 10940, 12581, 17020, 20239, 21880, 25162, 34040, 40478, 50324, 62905, 80956, 100648, 101195, 125810, 161912, 202390, 251620, 404780, 465497, 503240, 809560, 930994, 1861988, 2327485, 3723976, 4654970, 9309940, 18619880]

約数ペア:

[(1, 18619880), (2, 9309940), (4, 4654970), (5, 3723976), (8, 2327485), (10, 1861988), (20, 930994), (23, 809560), (37, 503240), (40, 465497), (46, 404780), (74, 251620), (92, 202390), (115, 161912), (148, 125810), (184, 101195), (185, 100648), (230, 80956), (296, 62905), (370, 50324), (460, 40478), (547, 34040), (740, 25162), (851, 21880), (920, 20239), (1094, 17020), (1480, 12581), (1702, 10940), (2188, 8510), (2735, 6808), (3404, 5470), (4255, 4376)]