164036680

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 376084800

約数和(自身を除く): 212048120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 163, 181, 278, 326, 362, 556, 652, 695, 724, 815, 905, 1112, 1304, 1390, 1448, 1630, 1810, 2780, 3260, 3620, 5560, 6520, 7240, 22657, 25159, 29503, 45314, 50318, 59006, 90628, 100636, 113285, 118012, 125795, 147515, 181256, 201272, 226570, 236024, 251590, 295030, 453140, 503180, 590060, 906280, 1006360, 1180120, 4100917, 8201834, 16403668, 20504585, 32807336, 41009170, 82018340, 164036680]

約数ペア:

[(1, 164036680), (2, 82018340), (4, 41009170), (5, 32807336), (8, 20504585), (10, 16403668), (20, 8201834), (40, 4100917), (139, 1180120), (163, 1006360), (181, 906280), (278, 590060), (326, 503180), (362, 453140), (556, 295030), (652, 251590), (695, 236024), (724, 226570), (815, 201272), (905, 181256), (1112, 147515), (1304, 125795), (1390, 118012), (1448, 113285), (1630, 100636), (1810, 90628), (2780, 59006), (3260, 50318), (3620, 45314), (5560, 29503), (6520, 25159), (7240, 22657)]