20145320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2039}}^1$

素因数の和:2082

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 31262680

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2039, 2470, 4078, 4940, 8156, 9880, 10195, 16312, 20390, 26507, 38741, 40780, 53014, 77482, 81560, 106028, 132535, 154964, 193705, 212056, 265070, 309928, 387410, 503633, 530140, 774820, 1007266, 1060280, 1549640, 2014532, 2518165, 4029064, 5036330, 10072660, 20145320]

約数ペア:

[(1, 20145320), (2, 10072660), (4, 5036330), (5, 4029064), (8, 2518165), (10, 2014532), (13, 1549640), (19, 1060280), (20, 1007266), (26, 774820), (38, 530140), (40, 503633), (52, 387410), (65, 309928), (76, 265070), (95, 212056), (104, 193705), (130, 154964), (152, 132535), (190, 106028), (247, 81560), (260, 77482), (380, 53014), (494, 40780), (520, 38741), (760, 26507), (988, 20390), (1235, 16312), (1976, 10195), (2039, 9880), (2470, 8156), (4078, 4940)]