200913980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{1951}}^1$

素因数の和:2250

約数の個数: 48

約数和(自身を含む): 445992960

約数和(自身を除く): 245078980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 271, 380, 542, 1084, 1355, 1951, 2710, 3902, 5149, 5420, 7804, 9755, 10298, 19510, 20596, 25745, 37069, 39020, 51490, 74138, 102980, 148276, 185345, 370690, 528721, 741380, 1057442, 2114884, 2643605, 5287210, 10045699, 10574420, 20091398, 40182796, 50228495, 100456990, 200913980]

約数ペア:

[(1, 200913980), (2, 100456990), (4, 50228495), (5, 40182796), (10, 20091398), (19, 10574420), (20, 10045699), (38, 5287210), (76, 2643605), (95, 2114884), (190, 1057442), (271, 741380), (380, 528721), (542, 370690), (1084, 185345), (1355, 148276), (1951, 102980), (2710, 74138), (3902, 51490), (5149, 39020), (5420, 37069), (7804, 25745), (9755, 20596), (10298, 19510)]