81887940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2791}}^1$

素因数の和:2969

約数の個数: 72

約数和(自身を含む): 250006848

約数和(自身を除く): 168118908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 815, 978, 1467, 1630, 1956, 2445, 2791, 2934, 3260, 4890, 5582, 5868, 7335, 8373, 9780, 11164, 13955, 14670, 16746, 25119, 27910, 29340, 33492, 41865, 50238, 55820, 83730, 100476, 125595, 167460, 251190, 454933, 502380, 909866, 1364799, 1819732, 2274665, 2729598, 4094397, 4549330, 5459196, 6823995, 8188794, 9098660, 13647990, 16377588, 20471985, 27295980, 40943970, 81887940]

約数ペア:

[(1, 81887940), (2, 40943970), (3, 27295980), (4, 20471985), (5, 16377588), (6, 13647990), (9, 9098660), (10, 8188794), (12, 6823995), (15, 5459196), (18, 4549330), (20, 4094397), (30, 2729598), (36, 2274665), (45, 1819732), (60, 1364799), (90, 909866), (163, 502380), (180, 454933), (326, 251190), (489, 167460), (652, 125595), (815, 100476), (978, 83730), (1467, 55820), (1630, 50238), (1956, 41865), (2445, 33492), (2791, 29340), (2934, 27910), (3260, 25119), (4890, 16746), (5582, 14670), (5868, 13955), (7335, 11164), (8373, 9780)]