654221420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{21563}}^1$

素因数の和:21650

約数の個数: 48

約数和(自身を含む): 1445478048

約数和(自身を除く): 791256628

約数列:

[1, 2, 4, 5, 10, 20, 37, 41, 74, 82, 148, 164, 185, 205, 370, 410, 740, 820, 1517, 3034, 6068, 7585, 15170, 21563, 30340, 43126, 86252, 107815, 215630, 431260, 797831, 884083, 1595662, 1768166, 3191324, 3536332, 3989155, 4420415, 7978310, 8840830, 15956620, 17681660, 32711071, 65422142, 130844284, 163555355, 327110710, 654221420]

約数ペア:

[(1, 654221420), (2, 327110710), (4, 163555355), (5, 130844284), (10, 65422142), (20, 32711071), (37, 17681660), (41, 15956620), (74, 8840830), (82, 7978310), (148, 4420415), (164, 3989155), (185, 3536332), (205, 3191324), (370, 1768166), (410, 1595662), (740, 884083), (820, 797831), (1517, 431260), (3034, 215630), (6068, 107815), (7585, 86252), (15170, 43126), (21563, 30340)]