31245520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 76995072

約数和(自身を除く): 45749552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 43, 62, 80, 86, 124, 155, 172, 215, 248, 293, 310, 344, 430, 496, 586, 620, 688, 860, 1172, 1240, 1333, 1465, 1720, 2344, 2480, 2666, 2930, 3440, 4688, 5332, 5860, 6665, 9083, 10664, 11720, 12599, 13330, 18166, 21328, 23440, 25198, 26660, 36332, 45415, 50396, 53320, 62995, 72664, 90830, 100792, 106640, 125990, 145328, 181660, 201584, 251980, 363320, 390569, 503960, 726640, 781138, 1007920, 1562276, 1952845, 3124552, 3905690, 6249104, 7811380, 15622760, 31245520]

約数ペア:

[(1, 31245520), (2, 15622760), (4, 7811380), (5, 6249104), (8, 3905690), (10, 3124552), (16, 1952845), (20, 1562276), (31, 1007920), (40, 781138), (43, 726640), (62, 503960), (80, 390569), (86, 363320), (124, 251980), (155, 201584), (172, 181660), (215, 145328), (248, 125990), (293, 106640), (310, 100792), (344, 90830), (430, 72664), (496, 62995), (586, 53320), (620, 50396), (688, 45415), (860, 36332), (1172, 26660), (1240, 25198), (1333, 23440), (1465, 21328), (1720, 18166), (2344, 13330), (2480, 12599), (2666, 11720), (2930, 10664), (3440, 9083), (4688, 6665), (5332, 5860)]