217599980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15791}}^1$

素因数の和:15866

約数の個数: 48

約数和(自身を含む): 501427584

約数和(自身を除く): 283827604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2756, 3445, 6890, 13780, 15791, 31582, 63164, 78955, 157910, 205283, 315820, 410566, 821132, 836923, 1026415, 1673846, 2052830, 3347692, 4105660, 4184615, 8369230, 10879999, 16738460, 21759998, 43519996, 54399995, 108799990, 217599980]

約数ペア:

[(1, 217599980), (2, 108799990), (4, 54399995), (5, 43519996), (10, 21759998), (13, 16738460), (20, 10879999), (26, 8369230), (52, 4184615), (53, 4105660), (65, 3347692), (106, 2052830), (130, 1673846), (212, 1026415), (260, 836923), (265, 821132), (530, 410566), (689, 315820), (1060, 205283), (1378, 157910), (2756, 78955), (3445, 63164), (6890, 31582), (13780, 15791)]