18487760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12163}}^1$

素因数の和:12195

約数の個数: 40

約数和(自身を含む): 45250080

約数和(自身を除く): 26762320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12163, 24326, 48652, 60815, 97304, 121630, 194608, 231097, 243260, 462194, 486520, 924388, 973040, 1155485, 1848776, 2310970, 3697552, 4621940, 9243880, 18487760]

約数ペア:

[(1, 18487760), (2, 9243880), (4, 4621940), (5, 3697552), (8, 2310970), (10, 1848776), (16, 1155485), (19, 973040), (20, 924388), (38, 486520), (40, 462194), (76, 243260), (80, 231097), (95, 194608), (152, 121630), (190, 97304), (304, 60815), (380, 48652), (760, 24326), (1520, 12163)]