31481820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 102080160

約数和(自身を除く): 70598340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 37, 45, 58, 60, 74, 87, 90, 111, 116, 145, 148, 163, 174, 180, 185, 222, 261, 290, 326, 333, 348, 370, 435, 444, 489, 522, 555, 580, 652, 666, 740, 815, 870, 978, 1044, 1073, 1110, 1305, 1332, 1467, 1630, 1665, 1740, 1956, 2146, 2220, 2445, 2610, 2934, 3219, 3260, 3330, 4292, 4727, 4890, 5220, 5365, 5868, 6031, 6438, 6660, 7335, 9454, 9657, 9780, 10730, 12062, 12876, 14181, 14670, 16095, 18093, 18908, 19314, 21460, 23635, 24124, 28362, 29340, 30155, 32190, 36186, 38628, 42543, 47270, 48285, 54279, 56724, 60310, 64380, 70905, 72372, 85086, 90465, 94540, 96570, 108558, 120620, 141810, 170172, 174899, 180930, 193140, 212715, 217116, 271395, 283620, 349798, 361860, 425430, 524697, 542790, 699596, 850860, 874495, 1049394, 1085580, 1574091, 1748990, 2098788, 2623485, 3148182, 3497980, 5246970, 6296364, 7870455, 10493940, 15740910, 31481820]

約数ペア:

[(1, 31481820), (2, 15740910), (3, 10493940), (4, 7870455), (5, 6296364), (6, 5246970), (9, 3497980), (10, 3148182), (12, 2623485), (15, 2098788), (18, 1748990), (20, 1574091), (29, 1085580), (30, 1049394), (36, 874495), (37, 850860), (45, 699596), (58, 542790), (60, 524697), (74, 425430), (87, 361860), (90, 349798), (111, 283620), (116, 271395), (145, 217116), (148, 212715), (163, 193140), (174, 180930), (180, 174899), (185, 170172), (222, 141810), (261, 120620), (290, 108558), (326, 96570), (333, 94540), (348, 90465), (370, 85086), (435, 72372), (444, 70905), (489, 64380), (522, 60310), (555, 56724), (580, 54279), (652, 48285), (666, 47270), (740, 42543), (815, 38628), (870, 36186), (978, 32190), (1044, 30155), (1073, 29340), (1110, 28362), (1305, 24124), (1332, 23635), (1467, 21460), (1630, 19314), (1665, 18908), (1740, 18093), (1956, 16095), (2146, 14670), (2220, 14181), (2445, 12876), (2610, 12062), (2934, 10730), (3219, 9780), (3260, 9657), (3330, 9454), (4292, 7335), (4727, 6660), (4890, 6438), (5220, 6031), (5365, 5868)]