20451960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{653}}^1$

素因数の和:702

約数の個数: 128

約数和(自身を含む): 70632000

約数和(自身を除く): 50180040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 29, 30, 36, 40, 45, 54, 58, 60, 72, 87, 90, 108, 116, 120, 135, 145, 174, 180, 216, 232, 261, 270, 290, 348, 360, 435, 522, 540, 580, 653, 696, 783, 870, 1044, 1080, 1160, 1305, 1306, 1566, 1740, 1959, 2088, 2610, 2612, 3132, 3265, 3480, 3915, 3918, 5220, 5224, 5877, 6264, 6530, 7830, 7836, 9795, 10440, 11754, 13060, 15660, 15672, 17631, 18937, 19590, 23508, 26120, 29385, 31320, 35262, 37874, 39180, 47016, 56811, 58770, 70524, 75748, 78360, 88155, 94685, 113622, 117540, 141048, 151496, 170433, 176310, 189370, 227244, 235080, 284055, 340866, 352620, 378740, 454488, 511299, 568110, 681732, 705240, 757480, 852165, 1022598, 1136220, 1363464, 1704330, 2045196, 2272440, 2556495, 3408660, 4090392, 5112990, 6817320, 10225980, 20451960]

約数ペア:

[(1, 20451960), (2, 10225980), (3, 6817320), (4, 5112990), (5, 4090392), (6, 3408660), (8, 2556495), (9, 2272440), (10, 2045196), (12, 1704330), (15, 1363464), (18, 1136220), (20, 1022598), (24, 852165), (27, 757480), (29, 705240), (30, 681732), (36, 568110), (40, 511299), (45, 454488), (54, 378740), (58, 352620), (60, 340866), (72, 284055), (87, 235080), (90, 227244), (108, 189370), (116, 176310), (120, 170433), (135, 151496), (145, 141048), (174, 117540), (180, 113622), (216, 94685), (232, 88155), (261, 78360), (270, 75748), (290, 70524), (348, 58770), (360, 56811), (435, 47016), (522, 39180), (540, 37874), (580, 35262), (653, 31320), (696, 29385), (783, 26120), (870, 23508), (1044, 19590), (1080, 18937), (1160, 17631), (1305, 15672), (1306, 15660), (1566, 13060), (1740, 11754), (1959, 10440), (2088, 9795), (2610, 7836), (2612, 7830), (3132, 6530), (3265, 6264), (3480, 5877), (3915, 5224), (3918, 5220)]