31219380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:957

約数の個数: 72

約数和(自身を含む): 95213664

約数和(自身を除く): 63994284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 502, 691, 753, 1004, 1255, 1382, 1506, 2073, 2259, 2510, 2764, 3012, 3455, 3765, 4146, 4518, 5020, 6219, 6910, 7530, 8292, 9036, 10365, 11295, 12438, 13820, 15060, 20730, 22590, 24876, 31095, 41460, 45180, 62190, 124380, 173441, 346882, 520323, 693764, 867205, 1040646, 1560969, 1734410, 2081292, 2601615, 3121938, 3468820, 5203230, 6243876, 7804845, 10406460, 15609690, 31219380]

約数ペア:

[(1, 31219380), (2, 15609690), (3, 10406460), (4, 7804845), (5, 6243876), (6, 5203230), (9, 3468820), (10, 3121938), (12, 2601615), (15, 2081292), (18, 1734410), (20, 1560969), (30, 1040646), (36, 867205), (45, 693764), (60, 520323), (90, 346882), (180, 173441), (251, 124380), (502, 62190), (691, 45180), (753, 41460), (1004, 31095), (1255, 24876), (1382, 22590), (1506, 20730), (2073, 15060), (2259, 13820), (2510, 12438), (2764, 11295), (3012, 10365), (3455, 9036), (3765, 8292), (4146, 7530), (4518, 6910), (5020, 6219)]