2021216975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 2635248000

約数和(自身を除く): 614031025

約数列:

[1, 5, 25, 41, 79, 109, 205, 229, 395, 545, 1025, 1145, 1975, 2725, 3239, 4469, 5725, 8611, 9389, 16195, 18091, 22345, 24961, 43055, 46945, 80975, 90455, 111725, 124805, 215275, 234725, 353051, 452275, 624025, 741731, 1023401, 1765255, 1971919, 3708655, 5117005, 8826275, 9859595, 18543275, 25585025, 49297975, 80848679, 404243395, 2021216975]

約数ペア:

[(1, 2021216975), (5, 404243395), (25, 80848679), (41, 49297975), (79, 25585025), (109, 18543275), (205, 9859595), (229, 8826275), (395, 5117005), (545, 3708655), (1025, 1971919), (1145, 1765255), (1975, 1023401), (2725, 741731), (3239, 624025), (4469, 452275), (5725, 353051), (8611, 234725), (9389, 215275), (16195, 124805), (18091, 111725), (22345, 90455), (24961, 80975), (43055, 46945)]