31207540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1319}}^1$

素因数の和:1361

約数の個数: 72

約数和(自身を含む): 81164160

約数和(自身を除く): 49956620

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 1183, 1319, 1690, 1820, 2366, 2638, 3380, 4732, 5276, 5915, 6595, 9233, 11830, 13190, 17147, 18466, 23660, 26380, 34294, 36932, 46165, 68588, 85735, 92330, 120029, 171470, 184660, 222911, 240058, 342940, 445822, 480116, 600145, 891644, 1114555, 1200290, 1560377, 2229110, 2400580, 3120754, 4458220, 6241508, 7801885, 15603770, 31207540]

約数ペア:

[(1, 31207540), (2, 15603770), (4, 7801885), (5, 6241508), (7, 4458220), (10, 3120754), (13, 2400580), (14, 2229110), (20, 1560377), (26, 1200290), (28, 1114555), (35, 891644), (52, 600145), (65, 480116), (70, 445822), (91, 342940), (130, 240058), (140, 222911), (169, 184660), (182, 171470), (260, 120029), (338, 92330), (364, 85735), (455, 68588), (676, 46165), (845, 36932), (910, 34294), (1183, 26380), (1319, 23660), (1690, 18466), (1820, 17147), (2366, 13190), (2638, 11830), (3380, 9233), (4732, 6595), (5276, 5915)]