39278620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 84672000

約数和(自身を除く): 45393380

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 199, 278, 284, 355, 398, 556, 695, 710, 796, 995, 1390, 1420, 1990, 2780, 3980, 9869, 14129, 19738, 27661, 28258, 39476, 49345, 55322, 56516, 70645, 98690, 110644, 138305, 141290, 197380, 276610, 282580, 553220, 1963931, 3927862, 7855724, 9819655, 19639310, 39278620]

約数ペア:

[(1, 39278620), (2, 19639310), (4, 9819655), (5, 7855724), (10, 3927862), (20, 1963931), (71, 553220), (139, 282580), (142, 276610), (199, 197380), (278, 141290), (284, 138305), (355, 110644), (398, 98690), (556, 70645), (695, 56516), (710, 55322), (796, 49345), (995, 39476), (1390, 28258), (1420, 27661), (1990, 19738), (2780, 14129), (3980, 9869)]