25267420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 54684000

約数和(自身を除く): 29416580

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 139, 149, 244, 278, 298, 305, 556, 596, 610, 695, 745, 1220, 1390, 1490, 2780, 2980, 8479, 9089, 16958, 18178, 20711, 33916, 36356, 41422, 42395, 45445, 82844, 84790, 90890, 103555, 169580, 181780, 207110, 414220, 1263371, 2526742, 5053484, 6316855, 12633710, 25267420]

約数ペア:

[(1, 25267420), (2, 12633710), (4, 6316855), (5, 5053484), (10, 2526742), (20, 1263371), (61, 414220), (122, 207110), (139, 181780), (149, 169580), (244, 103555), (278, 90890), (298, 84790), (305, 82844), (556, 45445), (596, 42395), (610, 41422), (695, 36356), (745, 33916), (1220, 20711), (1390, 18178), (1490, 16958), (2780, 9089), (2980, 8479)]