81105960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51991}}^1$

素因数の和:52018

約数の個数: 64

約数和(自身を含む): 262039680

約数和(自身を除く): 180933720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 51991, 103982, 155973, 207964, 259955, 311946, 415928, 519910, 623892, 675883, 779865, 1039820, 1247784, 1351766, 1559730, 2027649, 2079640, 2703532, 3119460, 3379415, 4055298, 5407064, 6238920, 6758830, 8110596, 10138245, 13517660, 16221192, 20276490, 27035320, 40552980, 81105960]

約数ペア:

[(1, 81105960), (2, 40552980), (3, 27035320), (4, 20276490), (5, 16221192), (6, 13517660), (8, 10138245), (10, 8110596), (12, 6758830), (13, 6238920), (15, 5407064), (20, 4055298), (24, 3379415), (26, 3119460), (30, 2703532), (39, 2079640), (40, 2027649), (52, 1559730), (60, 1351766), (65, 1247784), (78, 1039820), (104, 779865), (120, 675883), (130, 623892), (156, 519910), (195, 415928), (260, 311946), (312, 259955), (390, 207964), (520, 155973), (780, 103982), (1560, 51991)]