194990140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1\times {\mathrm{389}}^1$

素因数の和:822

約数の個数: 48

約数和(自身を含む): 417493440

約数和(自身を除く): 222503300

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 353, 355, 389, 706, 710, 778, 1412, 1420, 1556, 1765, 1945, 3530, 3890, 7060, 7780, 25063, 27619, 50126, 55238, 100252, 110476, 125315, 137317, 138095, 250630, 274634, 276190, 501260, 549268, 552380, 686585, 1373170, 2746340, 9749507, 19499014, 38998028, 48747535, 97495070, 194990140]

約数ペア:

[(1, 194990140), (2, 97495070), (4, 48747535), (5, 38998028), (10, 19499014), (20, 9749507), (71, 2746340), (142, 1373170), (284, 686585), (353, 552380), (355, 549268), (389, 501260), (706, 276190), (710, 274634), (778, 250630), (1412, 138095), (1420, 137317), (1556, 125315), (1765, 110476), (1945, 100252), (3530, 55238), (3890, 50126), (7060, 27619), (7780, 25063)]