18670990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 38610432

約数和(自身を除く): 19939442

約数列:

[1, 2, 5, 10, 13, 26, 31, 41, 62, 65, 82, 113, 130, 155, 205, 226, 310, 403, 410, 533, 565, 806, 1066, 1130, 1271, 1469, 2015, 2542, 2665, 2938, 3503, 4030, 4633, 5330, 6355, 7006, 7345, 9266, 12710, 14690, 16523, 17515, 23165, 33046, 35030, 45539, 46330, 60229, 82615, 91078, 120458, 143623, 165230, 227695, 287246, 301145, 455390, 602290, 718115, 1436230, 1867099, 3734198, 9335495, 18670990]

約数ペア:

[(1, 18670990), (2, 9335495), (5, 3734198), (10, 1867099), (13, 1436230), (26, 718115), (31, 602290), (41, 455390), (62, 301145), (65, 287246), (82, 227695), (113, 165230), (130, 143623), (155, 120458), (205, 91078), (226, 82615), (310, 60229), (403, 46330), (410, 45539), (533, 35030), (565, 33046), (806, 23165), (1066, 17515), (1130, 16523), (1271, 14690), (1469, 12710), (2015, 9266), (2542, 7345), (2665, 7006), (2938, 6355), (3503, 5330), (4030, 4633)]