178920540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21149}}^1$

素因数の和:21211

約数の個数: 72

約数和(自身を含む): 554299200

約数和(自身を除く): 375378660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2820, 4230, 8460, 21149, 42298, 63447, 84596, 105745, 126894, 190341, 211490, 253788, 317235, 380682, 422980, 634470, 761364, 951705, 994003, 1268940, 1903410, 1988006, 2982009, 3806820, 3976012, 4970015, 5964018, 8946027, 9940030, 11928036, 14910045, 17892054, 19880060, 29820090, 35784108, 44730135, 59640180, 89460270, 178920540]

約数ペア:

[(1, 178920540), (2, 89460270), (3, 59640180), (4, 44730135), (5, 35784108), (6, 29820090), (9, 19880060), (10, 17892054), (12, 14910045), (15, 11928036), (18, 9940030), (20, 8946027), (30, 5964018), (36, 4970015), (45, 3976012), (47, 3806820), (60, 2982009), (90, 1988006), (94, 1903410), (141, 1268940), (180, 994003), (188, 951705), (235, 761364), (282, 634470), (423, 422980), (470, 380682), (564, 317235), (705, 253788), (846, 211490), (940, 190341), (1410, 126894), (1692, 105745), (2115, 84596), (2820, 63447), (4230, 42298), (8460, 21149)]