81535860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{397}}^1$

素因数の和:582

約数の個数: 144

約数和(自身を含む): 285108096

約数和(自身を除く): 203572236

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 163, 180, 210, 252, 315, 326, 397, 420, 489, 630, 652, 794, 815, 978, 1141, 1191, 1260, 1467, 1588, 1630, 1956, 1985, 2282, 2382, 2445, 2779, 2934, 3260, 3423, 3573, 3970, 4564, 4764, 4890, 5558, 5705, 5868, 5955, 6846, 7146, 7335, 7940, 8337, 9780, 10269, 11116, 11410, 11910, 13692, 13895, 14292, 14670, 16674, 17115, 17865, 20538, 22820, 23820, 25011, 27790, 29340, 33348, 34230, 35730, 41076, 41685, 50022, 51345, 55580, 64711, 68460, 71460, 83370, 100044, 102690, 125055, 129422, 166740, 194133, 205380, 250110, 258844, 323555, 388266, 452977, 500220, 582399, 647110, 776532, 905954, 970665, 1164798, 1294220, 1358931, 1811908, 1941330, 2264885, 2329596, 2717862, 2911995, 3882660, 4076793, 4529770, 5435724, 5823990, 6794655, 8153586, 9059540, 11647980, 13589310, 16307172, 20383965, 27178620, 40767930, 81535860]

約数ペア:

[(1, 81535860), (2, 40767930), (3, 27178620), (4, 20383965), (5, 16307172), (6, 13589310), (7, 11647980), (9, 9059540), (10, 8153586), (12, 6794655), (14, 5823990), (15, 5435724), (18, 4529770), (20, 4076793), (21, 3882660), (28, 2911995), (30, 2717862), (35, 2329596), (36, 2264885), (42, 1941330), (45, 1811908), (60, 1358931), (63, 1294220), (70, 1164798), (84, 970665), (90, 905954), (105, 776532), (126, 647110), (140, 582399), (163, 500220), (180, 452977), (210, 388266), (252, 323555), (315, 258844), (326, 250110), (397, 205380), (420, 194133), (489, 166740), (630, 129422), (652, 125055), (794, 102690), (815, 100044), (978, 83370), (1141, 71460), (1191, 68460), (1260, 64711), (1467, 55580), (1588, 51345), (1630, 50022), (1956, 41685), (1985, 41076), (2282, 35730), (2382, 34230), (2445, 33348), (2779, 29340), (2934, 27790), (3260, 25011), (3423, 23820), (3573, 22820), (3970, 20538), (4564, 17865), (4764, 17115), (4890, 16674), (5558, 14670), (5705, 14292), (5868, 13895), (5955, 13692), (6846, 11910), (7146, 11410), (7335, 11116), (7940, 10269), (8337, 9780)]