81562860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:404

約数の個数: 144

約数和(自身を含む): 261660672

約数和(自身を除く): 180097812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 47, 60, 62, 90, 93, 94, 124, 141, 155, 180, 186, 188, 235, 279, 282, 310, 311, 372, 423, 465, 470, 558, 564, 620, 622, 705, 846, 930, 933, 940, 1116, 1244, 1395, 1410, 1457, 1555, 1692, 1860, 1866, 2115, 2790, 2799, 2820, 2914, 3110, 3732, 4230, 4371, 4665, 5580, 5598, 5828, 6220, 7285, 8460, 8742, 9330, 9641, 11196, 13113, 13995, 14570, 14617, 17484, 18660, 19282, 21855, 26226, 27990, 28923, 29140, 29234, 38564, 43710, 43851, 48205, 52452, 55980, 57846, 58468, 65565, 73085, 86769, 87420, 87702, 96410, 115692, 131130, 131553, 144615, 146170, 173538, 175404, 192820, 219255, 262260, 263106, 289230, 292340, 347076, 433845, 438510, 453127, 526212, 578460, 657765, 867690, 877020, 906254, 1315530, 1359381, 1735380, 1812508, 2265635, 2631060, 2718762, 4078143, 4531270, 5437524, 6796905, 8156286, 9062540, 13593810, 16312572, 20390715, 27187620, 40781430, 81562860]

約数ペア:

[(1, 81562860), (2, 40781430), (3, 27187620), (4, 20390715), (5, 16312572), (6, 13593810), (9, 9062540), (10, 8156286), (12, 6796905), (15, 5437524), (18, 4531270), (20, 4078143), (30, 2718762), (31, 2631060), (36, 2265635), (45, 1812508), (47, 1735380), (60, 1359381), (62, 1315530), (90, 906254), (93, 877020), (94, 867690), (124, 657765), (141, 578460), (155, 526212), (180, 453127), (186, 438510), (188, 433845), (235, 347076), (279, 292340), (282, 289230), (310, 263106), (311, 262260), (372, 219255), (423, 192820), (465, 175404), (470, 173538), (558, 146170), (564, 144615), (620, 131553), (622, 131130), (705, 115692), (846, 96410), (930, 87702), (933, 87420), (940, 86769), (1116, 73085), (1244, 65565), (1395, 58468), (1410, 57846), (1457, 55980), (1555, 52452), (1692, 48205), (1860, 43851), (1866, 43710), (2115, 38564), (2790, 29234), (2799, 29140), (2820, 28923), (2914, 27990), (3110, 26226), (3732, 21855), (4230, 19282), (4371, 18660), (4665, 17484), (5580, 14617), (5598, 14570), (5828, 13995), (6220, 13113), (7285, 11196), (8460, 9641), (8742, 9330)]