31263440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1356

約数の個数: 80

約数和(自身を含む): 81744768

約数和(自身を除く): 50481328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1307, 1495, 1840, 2392, 2614, 2990, 4784, 5228, 5980, 6535, 10456, 11960, 13070, 16991, 20912, 23920, 26140, 30061, 33982, 52280, 60122, 67964, 84955, 104560, 120244, 135928, 150305, 169910, 240488, 271856, 300610, 339820, 390793, 480976, 601220, 679640, 781586, 1202440, 1359280, 1563172, 1953965, 2404880, 3126344, 3907930, 6252688, 7815860, 15631720, 31263440]

約数ペア:

[(1, 31263440), (2, 15631720), (4, 7815860), (5, 6252688), (8, 3907930), (10, 3126344), (13, 2404880), (16, 1953965), (20, 1563172), (23, 1359280), (26, 1202440), (40, 781586), (46, 679640), (52, 601220), (65, 480976), (80, 390793), (92, 339820), (104, 300610), (115, 271856), (130, 240488), (184, 169910), (208, 150305), (230, 135928), (260, 120244), (299, 104560), (368, 84955), (460, 67964), (520, 60122), (598, 52280), (920, 33982), (1040, 30061), (1196, 26140), (1307, 23920), (1495, 20912), (1840, 16991), (2392, 13070), (2614, 11960), (2990, 10456), (4784, 6535), (5228, 5980)]