28970420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 63504000

約数和(自身を除く): 34533580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 199, 251, 290, 398, 502, 580, 796, 995, 1004, 1255, 1990, 2510, 3980, 5020, 5771, 7279, 11542, 14558, 23084, 28855, 29116, 36395, 49949, 57710, 72790, 99898, 115420, 145580, 199796, 249745, 499490, 998980, 1448521, 2897042, 5794084, 7242605, 14485210, 28970420]

約数ペア:

[(1, 28970420), (2, 14485210), (4, 7242605), (5, 5794084), (10, 2897042), (20, 1448521), (29, 998980), (58, 499490), (116, 249745), (145, 199796), (199, 145580), (251, 115420), (290, 99898), (398, 72790), (502, 57710), (580, 49949), (796, 36395), (995, 29116), (1004, 28855), (1255, 23084), (1990, 14558), (2510, 11542), (3980, 7279), (5020, 5771)]