31285280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^3\times {\mathrm{89}}^1$

素因数の和:143

約数の個数: 96

約数和(自身を含む): 80967600

約数和(自身を除く): 49682320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 89, 104, 130, 160, 169, 178, 208, 260, 338, 356, 416, 445, 520, 676, 712, 845, 890, 1040, 1157, 1352, 1424, 1690, 1780, 2080, 2197, 2314, 2704, 2848, 3380, 3560, 4394, 4628, 5408, 5785, 6760, 7120, 8788, 9256, 10985, 11570, 13520, 14240, 15041, 17576, 18512, 21970, 23140, 27040, 30082, 35152, 37024, 43940, 46280, 60164, 70304, 75205, 87880, 92560, 120328, 150410, 175760, 185120, 195533, 240656, 300820, 351520, 391066, 481312, 601640, 782132, 977665, 1203280, 1564264, 1955330, 2406560, 3128528, 3910660, 6257056, 7821320, 15642640, 31285280]

約数ペア:

[(1, 31285280), (2, 15642640), (4, 7821320), (5, 6257056), (8, 3910660), (10, 3128528), (13, 2406560), (16, 1955330), (20, 1564264), (26, 1203280), (32, 977665), (40, 782132), (52, 601640), (65, 481312), (80, 391066), (89, 351520), (104, 300820), (130, 240656), (160, 195533), (169, 185120), (178, 175760), (208, 150410), (260, 120328), (338, 92560), (356, 87880), (416, 75205), (445, 70304), (520, 60164), (676, 46280), (712, 43940), (845, 37024), (890, 35152), (1040, 30082), (1157, 27040), (1352, 23140), (1424, 21970), (1690, 18512), (1780, 17576), (2080, 15041), (2197, 14240), (2314, 13520), (2704, 11570), (2848, 10985), (3380, 9256), (3560, 8788), (4394, 7120), (4628, 6760), (5408, 5785)]