20768280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13313}}^1$

素因数の和:13340

約数の個数: 64

約数和(自身を含む): 67102560

約数和(自身を除く): 46334280

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, 13313, 26626, 39939, 53252, 66565, 79878, 106504, 133130, 159756, 173069, 199695, 266260, 319512, 346138, 399390, 519207, 532520, 692276, 798780, 865345, 1038414, 1384552, 1597560, 1730690, 2076828, 2596035, 3461380, 4153656, 5192070, 6922760, 10384140, 20768280]

約数ペア:

[(1, 20768280), (2, 10384140), (3, 6922760), (4, 5192070), (5, 4153656), (6, 3461380), (8, 2596035), (10, 2076828), (12, 1730690), (13, 1597560), (15, 1384552), (20, 1038414), (24, 865345), (26, 798780), (30, 692276), (39, 532520), (40, 519207), (52, 399390), (60, 346138), (65, 319512), (78, 266260), (104, 199695), (120, 173069), (130, 159756), (156, 133130), (195, 106504), (260, 79878), (312, 66565), (390, 53252), (520, 39939), (780, 26626), (1560, 13313)]