81965050

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^3\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 161596800

約数和(自身を除く): 79631750

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 239, 361, 475, 478, 722, 950, 1195, 1805, 2390, 3610, 4541, 5975, 6859, 9025, 9082, 11950, 13718, 18050, 22705, 34295, 45410, 68590, 86279, 113525, 171475, 172558, 227050, 342950, 431395, 862790, 1639301, 2156975, 3278602, 4313950, 8196505, 16393010, 40982525, 81965050]

約数ペア:

[(1, 81965050), (2, 40982525), (5, 16393010), (10, 8196505), (19, 4313950), (25, 3278602), (38, 2156975), (50, 1639301), (95, 862790), (190, 431395), (239, 342950), (361, 227050), (475, 172558), (478, 171475), (722, 113525), (950, 86279), (1195, 68590), (1805, 45410), (2390, 34295), (3610, 22705), (4541, 18050), (5975, 13718), (6859, 11950), (9025, 9082)]