20187585

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2399}}^1$

素因数の和:2438

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 20247615

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 153, 165, 187, 255, 495, 561, 765, 935, 1683, 2399, 2805, 7197, 8415, 11995, 21591, 26389, 35985, 40783, 79167, 107955, 122349, 131945, 203915, 237501, 367047, 395835, 448613, 611745, 1187505, 1345839, 1835235, 2243065, 4037517, 6729195, 20187585]

約数ペア:

[(1, 20187585), (3, 6729195), (5, 4037517), (9, 2243065), (11, 1835235), (15, 1345839), (17, 1187505), (33, 611745), (45, 448613), (51, 395835), (55, 367047), (85, 237501), (99, 203915), (153, 131945), (165, 122349), (187, 107955), (255, 79167), (495, 40783), (561, 35985), (765, 26389), (935, 21591), (1683, 11995), (2399, 8415), (2805, 7197)]