18781380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{691}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 57430464

約数和(自身を除く): 38649084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 151, 180, 302, 453, 604, 691, 755, 906, 1359, 1382, 1510, 1812, 2073, 2265, 2718, 2764, 3020, 3455, 4146, 4530, 5436, 6219, 6795, 6910, 8292, 9060, 10365, 12438, 13590, 13820, 20730, 24876, 27180, 31095, 41460, 62190, 104341, 124380, 208682, 313023, 417364, 521705, 626046, 939069, 1043410, 1252092, 1565115, 1878138, 2086820, 3130230, 3756276, 4695345, 6260460, 9390690, 18781380]

約数ペア:

[(1, 18781380), (2, 9390690), (3, 6260460), (4, 4695345), (5, 3756276), (6, 3130230), (9, 2086820), (10, 1878138), (12, 1565115), (15, 1252092), (18, 1043410), (20, 939069), (30, 626046), (36, 521705), (45, 417364), (60, 313023), (90, 208682), (151, 124380), (180, 104341), (302, 62190), (453, 41460), (604, 31095), (691, 27180), (755, 24876), (906, 20730), (1359, 13820), (1382, 13590), (1510, 12438), (1812, 10365), (2073, 9060), (2265, 8292), (2718, 6910), (2764, 6795), (3020, 6219), (3455, 5436), (4146, 4530)]