20430540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8731}}^1$

素因数の和:8759

約数の個数: 72

約数和(自身を含む): 66747408

約数和(自身を除く): 46316868

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8731, 17462, 26193, 34924, 43655, 52386, 78579, 87310, 104772, 113503, 130965, 157158, 174620, 227006, 261930, 314316, 340509, 392895, 454012, 523860, 567515, 681018, 785790, 1021527, 1135030, 1362036, 1571580, 1702545, 2043054, 2270060, 3405090, 4086108, 5107635, 6810180, 10215270, 20430540]

約数ペア:

[(1, 20430540), (2, 10215270), (3, 6810180), (4, 5107635), (5, 4086108), (6, 3405090), (9, 2270060), (10, 2043054), (12, 1702545), (13, 1571580), (15, 1362036), (18, 1135030), (20, 1021527), (26, 785790), (30, 681018), (36, 567515), (39, 523860), (45, 454012), (52, 392895), (60, 340509), (65, 314316), (78, 261930), (90, 227006), (117, 174620), (130, 157158), (156, 130965), (180, 113503), (195, 104772), (234, 87310), (260, 78579), (390, 52386), (468, 43655), (585, 34924), (780, 26193), (1170, 17462), (2340, 8731)]