18986960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{607}}^1$

素因数の和:660

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 29867056

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 607, 680, 782, 920, 1214, 1360, 1564, 1840, 1955, 2428, 3035, 3128, 3910, 4856, 6070, 6256, 7820, 9712, 10319, 12140, 13961, 15640, 20638, 24280, 27922, 31280, 41276, 48560, 51595, 55844, 69805, 82552, 103190, 111688, 139610, 165104, 206380, 223376, 237337, 279220, 412760, 474674, 558440, 825520, 949348, 1116880, 1186685, 1898696, 2373370, 3797392, 4746740, 9493480, 18986960]

約数ペア:

[(1, 18986960), (2, 9493480), (4, 4746740), (5, 3797392), (8, 2373370), (10, 1898696), (16, 1186685), (17, 1116880), (20, 949348), (23, 825520), (34, 558440), (40, 474674), (46, 412760), (68, 279220), (80, 237337), (85, 223376), (92, 206380), (115, 165104), (136, 139610), (170, 111688), (184, 103190), (230, 82552), (272, 69805), (340, 55844), (368, 51595), (391, 48560), (460, 41276), (607, 31280), (680, 27922), (782, 24280), (920, 20638), (1214, 15640), (1360, 13961), (1564, 12140), (1840, 10319), (1955, 9712), (2428, 7820), (3035, 6256), (3128, 6070), (3910, 4856)]