1285380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 4025112

約数和(自身を除く): 2739732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 193, 222, 333, 370, 386, 444, 555, 579, 666, 740, 772, 965, 1110, 1158, 1332, 1665, 1737, 1930, 2220, 2316, 2895, 3330, 3474, 3860, 5790, 6660, 6948, 7141, 8685, 11580, 14282, 17370, 21423, 28564, 34740, 35705, 42846, 64269, 71410, 85692, 107115, 128538, 142820, 214230, 257076, 321345, 428460, 642690, 1285380]

約数ペア:

[(1, 1285380), (2, 642690), (3, 428460), (4, 321345), (5, 257076), (6, 214230), (9, 142820), (10, 128538), (12, 107115), (15, 85692), (18, 71410), (20, 64269), (30, 42846), (36, 35705), (37, 34740), (45, 28564), (60, 21423), (74, 17370), (90, 14282), (111, 11580), (148, 8685), (180, 7141), (185, 6948), (193, 6660), (222, 5790), (333, 3860), (370, 3474), (386, 3330), (444, 2895), (555, 2316), (579, 2220), (666, 1930), (740, 1737), (772, 1665), (965, 1332), (1110, 1158)]