30918020

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4507}}^1$

素因数の和:4537

約数の個数: 48

約数和(自身を含む): 75734400

約数和(自身を除く): 44816380

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, 4507, 6860, 9014, 18028, 22535, 31549, 45070, 63098, 90140, 126196, 157745, 220843, 315490, 441686, 630980, 883372, 1104215, 1545901, 2208430, 3091802, 4416860, 6183604, 7729505, 15459010, 30918020]

約数ペア:

[(1, 30918020), (2, 15459010), (4, 7729505), (5, 6183604), (7, 4416860), (10, 3091802), (14, 2208430), (20, 1545901), (28, 1104215), (35, 883372), (49, 630980), (70, 441686), (98, 315490), (140, 220843), (196, 157745), (245, 126196), (343, 90140), (490, 63098), (686, 45070), (980, 31549), (1372, 22535), (1715, 18028), (3430, 9014), (4507, 6860)]