130154780

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{18973}}^1$

素因数の和:19003

約数の個数: 48

約数和(自身を含む): 318763200

約数和(自身を除く): 188608420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 18973, 37946, 75892, 94865, 132811, 189730, 265622, 379460, 531244, 664055, 929677, 1328110, 1859354, 2656220, 3718708, 4648385, 6507739, 9296770, 13015478, 18593540, 26030956, 32538695, 65077390, 130154780]

約数ペア:

[(1, 130154780), (2, 65077390), (4, 32538695), (5, 26030956), (7, 18593540), (10, 13015478), (14, 9296770), (20, 6507739), (28, 4648385), (35, 3718708), (49, 2656220), (70, 1859354), (98, 1328110), (140, 929677), (196, 664055), (245, 531244), (343, 379460), (490, 265622), (686, 189730), (980, 132811), (1372, 94865), (1715, 75892), (3430, 37946), (6860, 18973)]