201630820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1\times {\mathrm{811}}^1$

素因数の和:1252

約数の個数: 48

約数和(自身を含む): 438713856

約数和(自身を除く): 237083036

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 401, 620, 802, 811, 1604, 1622, 2005, 3244, 4010, 4055, 8020, 8110, 12431, 16220, 24862, 25141, 49724, 50282, 62155, 100564, 124310, 125705, 248620, 251410, 325211, 502820, 650422, 1300844, 1626055, 3252110, 6504220, 10081541, 20163082, 40326164, 50407705, 100815410, 201630820]

約数ペア:

[(1, 201630820), (2, 100815410), (4, 50407705), (5, 40326164), (10, 20163082), (20, 10081541), (31, 6504220), (62, 3252110), (124, 1626055), (155, 1300844), (310, 650422), (401, 502820), (620, 325211), (802, 251410), (811, 248620), (1604, 125705), (1622, 124310), (2005, 100564), (3244, 62155), (4010, 50282), (4055, 49724), (8020, 25141), (8110, 24862), (12431, 16220)]