81860380

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11933}}^1$

素因数の和:11963

約数の個数: 48

約数和(自身を含む): 200491200

約数和(自身を除く): 118630820

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, 11933, 23866, 47732, 59665, 83531, 119330, 167062, 238660, 334124, 417655, 584717, 835310, 1169434, 1670620, 2338868, 2923585, 4093019, 5847170, 8186038, 11694340, 16372076, 20465095, 40930190, 81860380]

約数ペア:

[(1, 81860380), (2, 40930190), (4, 20465095), (5, 16372076), (7, 11694340), (10, 8186038), (14, 5847170), (20, 4093019), (28, 2923585), (35, 2338868), (49, 1670620), (70, 1169434), (98, 835310), (140, 584717), (196, 417655), (245, 334124), (343, 238660), (490, 167062), (686, 119330), (980, 83531), (1372, 59665), (1715, 47732), (3430, 23866), (6860, 11933)]