261368560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{373}}^1\times {\mathrm{461}}^1$

素因数の和:866

約数の個数: 80

約数和(自身を含む): 642771360

約数和(自身を除く): 381402800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 373, 380, 461, 746, 760, 922, 1492, 1520, 1844, 1865, 2305, 2984, 3688, 3730, 4610, 5968, 7087, 7376, 7460, 8759, 9220, 14174, 14920, 17518, 18440, 28348, 29840, 35036, 35435, 36880, 43795, 56696, 70072, 70870, 87590, 113392, 140144, 141740, 171953, 175180, 283480, 343906, 350360, 566960, 687812, 700720, 859765, 1375624, 1719530, 2751248, 3267107, 3439060, 6534214, 6878120, 13068428, 13756240, 16335535, 26136856, 32671070, 52273712, 65342140, 130684280, 261368560]

約数ペア:

[(1, 261368560), (2, 130684280), (4, 65342140), (5, 52273712), (8, 32671070), (10, 26136856), (16, 16335535), (19, 13756240), (20, 13068428), (38, 6878120), (40, 6534214), (76, 3439060), (80, 3267107), (95, 2751248), (152, 1719530), (190, 1375624), (304, 859765), (373, 700720), (380, 687812), (461, 566960), (746, 350360), (760, 343906), (922, 283480), (1492, 175180), (1520, 171953), (1844, 141740), (1865, 140144), (2305, 113392), (2984, 87590), (3688, 70870), (3730, 70072), (4610, 56696), (5968, 43795), (7087, 36880), (7376, 35435), (7460, 35036), (8759, 29840), (9220, 28348), (14174, 18440), (14920, 17518)]