21338330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 23295910

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 53, 65, 95, 106, 130, 163, 190, 247, 265, 326, 494, 530, 689, 815, 1007, 1235, 1378, 1630, 2014, 2119, 2470, 3097, 3445, 4238, 5035, 6194, 6890, 8639, 10070, 10595, 13091, 15485, 17278, 21190, 26182, 30970, 40261, 43195, 65455, 80522, 86390, 112307, 130910, 164141, 201305, 224614, 328282, 402610, 561535, 820705, 1123070, 1641410, 2133833, 4267666, 10669165, 21338330]

約数ペア:

[(1, 21338330), (2, 10669165), (5, 4267666), (10, 2133833), (13, 1641410), (19, 1123070), (26, 820705), (38, 561535), (53, 402610), (65, 328282), (95, 224614), (106, 201305), (130, 164141), (163, 130910), (190, 112307), (247, 86390), (265, 80522), (326, 65455), (494, 43195), (530, 40261), (689, 30970), (815, 26182), (1007, 21190), (1235, 17278), (1378, 15485), (1630, 13091), (2014, 10595), (2119, 10070), (2470, 8639), (3097, 6890), (3445, 6194), (4238, 5035)]