81681900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{8783}}^1$

素因数の和:8831

約数の個数: 72

約数和(自身を含む): 243984384

約数和(自身を除く): 162302484

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 31, 50, 60, 62, 75, 93, 100, 124, 150, 155, 186, 300, 310, 372, 465, 620, 775, 930, 1550, 1860, 2325, 3100, 4650, 8783, 9300, 17566, 26349, 35132, 43915, 52698, 87830, 105396, 131745, 175660, 219575, 263490, 272273, 439150, 526980, 544546, 658725, 816819, 878300, 1089092, 1317450, 1361365, 1633638, 2634900, 2722730, 3267276, 4084095, 5445460, 6806825, 8168190, 13613650, 16336380, 20420475, 27227300, 40840950, 81681900]

約数ペア:

[(1, 81681900), (2, 40840950), (3, 27227300), (4, 20420475), (5, 16336380), (6, 13613650), (10, 8168190), (12, 6806825), (15, 5445460), (20, 4084095), (25, 3267276), (30, 2722730), (31, 2634900), (50, 1633638), (60, 1361365), (62, 1317450), (75, 1089092), (93, 878300), (100, 816819), (124, 658725), (150, 544546), (155, 526980), (186, 439150), (300, 272273), (310, 263490), (372, 219575), (465, 175660), (620, 131745), (775, 105396), (930, 87830), (1550, 52698), (1860, 43915), (2325, 35132), (3100, 26349), (4650, 17566), (8783, 9300)]