28001990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1531}}^1$

素因数の和:1628

約数の個数: 32

約数和(自身を含む): 52945920

約数和(自身を除く): 24943930

約数列:

[1, 2, 5, 10, 31, 59, 62, 118, 155, 295, 310, 590, 1531, 1829, 3062, 3658, 7655, 9145, 15310, 18290, 47461, 90329, 94922, 180658, 237305, 451645, 474610, 903290, 2800199, 5600398, 14000995, 28001990]

約数ペア:

[(1, 28001990), (2, 14000995), (5, 5600398), (10, 2800199), (31, 903290), (59, 474610), (62, 451645), (118, 237305), (155, 180658), (295, 94922), (310, 90329), (590, 47461), (1531, 18290), (1829, 15310), (3062, 9145), (3658, 7655)]