20786490

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{461}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 35097030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 167, 270, 334, 461, 501, 835, 922, 1002, 1383, 1503, 1670, 2305, 2505, 2766, 3006, 4149, 4509, 4610, 5010, 6915, 7515, 8298, 9018, 12447, 13830, 15030, 20745, 22545, 24894, 41490, 45090, 62235, 76987, 124470, 153974, 230961, 384935, 461922, 692883, 769870, 1154805, 1385766, 2078649, 2309610, 3464415, 4157298, 6928830, 10393245, 20786490]

約数ペア:

[(1, 20786490), (2, 10393245), (3, 6928830), (5, 4157298), (6, 3464415), (9, 2309610), (10, 2078649), (15, 1385766), (18, 1154805), (27, 769870), (30, 692883), (45, 461922), (54, 384935), (90, 230961), (135, 153974), (167, 124470), (270, 76987), (334, 62235), (461, 45090), (501, 41490), (835, 24894), (922, 22545), (1002, 20745), (1383, 15030), (1503, 13830), (1670, 12447), (2305, 9018), (2505, 8298), (2766, 7515), (3006, 6915), (4149, 5010), (4509, 4610)]