81029680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53309}}^1$

素因数の和:53341

約数の個数: 40

約数和(自身を含む): 198313200

約数和(自身を除く): 117283520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 53309, 106618, 213236, 266545, 426472, 533090, 852944, 1012871, 1066180, 2025742, 2132360, 4051484, 4264720, 5064355, 8102968, 10128710, 16205936, 20257420, 40514840, 81029680]

約数ペア:

[(1, 81029680), (2, 40514840), (4, 20257420), (5, 16205936), (8, 10128710), (10, 8102968), (16, 5064355), (19, 4264720), (20, 4051484), (38, 2132360), (40, 2025742), (76, 1066180), (80, 1012871), (95, 852944), (152, 533090), (190, 426472), (304, 266545), (380, 213236), (760, 106618), (1520, 53309)]