18102780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{617}}^1$

素因数の和:795

約数の個数: 72

約数和(自身を含む): 55338192

約数和(自身を除く): 37235412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 617, 652, 815, 978, 1234, 1467, 1630, 1851, 1956, 2445, 2468, 2934, 3085, 3260, 3702, 4890, 5553, 5868, 6170, 7335, 7404, 9255, 9780, 11106, 12340, 14670, 18510, 22212, 27765, 29340, 37020, 55530, 100571, 111060, 201142, 301713, 402284, 502855, 603426, 905139, 1005710, 1206852, 1508565, 1810278, 2011420, 3017130, 3620556, 4525695, 6034260, 9051390, 18102780]

約数ペア:

[(1, 18102780), (2, 9051390), (3, 6034260), (4, 4525695), (5, 3620556), (6, 3017130), (9, 2011420), (10, 1810278), (12, 1508565), (15, 1206852), (18, 1005710), (20, 905139), (30, 603426), (36, 502855), (45, 402284), (60, 301713), (90, 201142), (163, 111060), (180, 100571), (326, 55530), (489, 37020), (617, 29340), (652, 27765), (815, 22212), (978, 18510), (1234, 14670), (1467, 12340), (1630, 11106), (1851, 9780), (1956, 9255), (2445, 7404), (2468, 7335), (2934, 6170), (3085, 5868), (3260, 5553), (3702, 4890)]