19935045

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 39325440

約数和(自身を除く): 19390395

約数列:

[1, 3, 5, 9, 13, 15, 27, 37, 39, 45, 65, 111, 117, 135, 185, 195, 307, 333, 351, 481, 555, 585, 921, 999, 1443, 1535, 1665, 1755, 2405, 2763, 3991, 4329, 4605, 4995, 7215, 8289, 11359, 11973, 12987, 13815, 19955, 21645, 34077, 35919, 41445, 56795, 59865, 64935, 102231, 107757, 147667, 170385, 179595, 306693, 443001, 511155, 538785, 738335, 1329003, 1533465, 2215005, 3987009, 6645015, 19935045]

約数ペア:

[(1, 19935045), (3, 6645015), (5, 3987009), (9, 2215005), (13, 1533465), (15, 1329003), (27, 738335), (37, 538785), (39, 511155), (45, 443001), (65, 306693), (111, 179595), (117, 170385), (135, 147667), (185, 107757), (195, 102231), (307, 64935), (333, 59865), (351, 56795), (481, 41445), (555, 35919), (585, 34077), (921, 21645), (999, 19955), (1443, 13815), (1535, 12987), (1665, 11973), (1755, 11359), (2405, 8289), (2763, 7215), (3991, 4995), (4329, 4605)]