1291278700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{1097}}^1$

素因数の和:1339

約数の個数: 72

約数和(自身を含む): 2859192000

約数和(自身を除く): 1567913300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 149, 158, 298, 316, 395, 596, 745, 790, 1097, 1490, 1580, 1975, 2194, 2980, 3725, 3950, 4388, 5485, 7450, 7900, 10970, 11771, 14900, 21940, 23542, 27425, 47084, 54850, 58855, 86663, 109700, 117710, 163453, 173326, 235420, 294275, 326906, 346652, 433315, 588550, 653812, 817265, 866630, 1177100, 1634530, 1733260, 2166575, 3269060, 4086325, 4333150, 8172650, 8666300, 12912787, 16345300, 25825574, 51651148, 64563935, 129127870, 258255740, 322819675, 645639350, 1291278700]

約数ペア:

[(1, 1291278700), (2, 645639350), (4, 322819675), (5, 258255740), (10, 129127870), (20, 64563935), (25, 51651148), (50, 25825574), (79, 16345300), (100, 12912787), (149, 8666300), (158, 8172650), (298, 4333150), (316, 4086325), (395, 3269060), (596, 2166575), (745, 1733260), (790, 1634530), (1097, 1177100), (1490, 866630), (1580, 817265), (1975, 653812), (2194, 588550), (2980, 433315), (3725, 346652), (3950, 326906), (4388, 294275), (5485, 235420), (7450, 173326), (7900, 163453), (10970, 117710), (11771, 109700), (14900, 86663), (21940, 58855), (23542, 54850), (27425, 47084)]