123020420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{2699}}^1$

素因数の和:2804

約数の個数: 48

約数和(自身を含む): 269438400

約数和(自身を除く): 146417980

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 430, 530, 860, 1060, 2279, 2699, 4558, 5398, 9116, 10796, 11395, 13495, 22790, 26990, 45580, 53980, 116057, 143047, 232114, 286094, 464228, 572188, 580285, 715235, 1160570, 1430470, 2321140, 2860940, 6151021, 12302042, 24604084, 30755105, 61510210, 123020420]

約数ペア:

[(1, 123020420), (2, 61510210), (4, 30755105), (5, 24604084), (10, 12302042), (20, 6151021), (43, 2860940), (53, 2321140), (86, 1430470), (106, 1160570), (172, 715235), (212, 580285), (215, 572188), (265, 464228), (430, 286094), (530, 232114), (860, 143047), (1060, 116057), (2279, 53980), (2699, 45580), (4558, 26990), (5398, 22790), (9116, 13495), (10796, 11395)]