31387280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 76870080

約数和(自身を除く): 45482800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 83, 116, 145, 163, 166, 232, 290, 326, 332, 415, 464, 580, 652, 664, 815, 830, 1160, 1304, 1328, 1630, 1660, 2320, 2407, 2608, 3260, 3320, 4727, 4814, 6520, 6640, 9454, 9628, 12035, 13040, 13529, 18908, 19256, 23635, 24070, 27058, 37816, 38512, 47270, 48140, 54116, 67645, 75632, 94540, 96280, 108232, 135290, 189080, 192560, 216464, 270580, 378160, 392341, 541160, 784682, 1082320, 1569364, 1961705, 3138728, 3923410, 6277456, 7846820, 15693640, 31387280]

約数ペア:

[(1, 31387280), (2, 15693640), (4, 7846820), (5, 6277456), (8, 3923410), (10, 3138728), (16, 1961705), (20, 1569364), (29, 1082320), (40, 784682), (58, 541160), (80, 392341), (83, 378160), (116, 270580), (145, 216464), (163, 192560), (166, 189080), (232, 135290), (290, 108232), (326, 96280), (332, 94540), (415, 75632), (464, 67645), (580, 54116), (652, 48140), (664, 47270), (815, 38512), (830, 37816), (1160, 27058), (1304, 24070), (1328, 23635), (1630, 19256), (1660, 18908), (2320, 13529), (2407, 13040), (2608, 12035), (3260, 9628), (3320, 9454), (4727, 6640), (4814, 6520)]