20921160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13411}}^1$

素因数の和:13438

約数の個数: 64

約数和(自身を含む): 67596480

約数和(自身を除く): 46675320

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, 13411, 26822, 40233, 53644, 67055, 80466, 107288, 134110, 160932, 174343, 201165, 268220, 321864, 348686, 402330, 523029, 536440, 697372, 804660, 871715, 1046058, 1394744, 1609320, 1743430, 2092116, 2615145, 3486860, 4184232, 5230290, 6973720, 10460580, 20921160]

約数ペア:

[(1, 20921160), (2, 10460580), (3, 6973720), (4, 5230290), (5, 4184232), (6, 3486860), (8, 2615145), (10, 2092116), (12, 1743430), (13, 1609320), (15, 1394744), (20, 1046058), (24, 871715), (26, 804660), (30, 697372), (39, 536440), (40, 523029), (52, 402330), (60, 348686), (65, 321864), (78, 268220), (104, 201165), (120, 174343), (130, 160932), (156, 134110), (195, 107288), (260, 80466), (312, 67055), (390, 53644), (520, 40233), (780, 26822), (1560, 13411)]