161143180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{2029}}^1$

素因数の和:2087

約数の個数: 72

約数和(自身を含む): 389808720

約数和(自身を除く): 228665540

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1045, 1444, 1805, 2029, 2090, 3610, 3971, 4058, 4180, 7220, 7942, 8116, 10145, 15884, 19855, 20290, 22319, 38551, 39710, 40580, 44638, 77102, 79420, 89276, 111595, 154204, 192755, 223190, 385510, 424061, 446380, 732469, 771020, 848122, 1464938, 1696244, 2120305, 2929876, 3662345, 4240610, 7324690, 8057159, 8481220, 14649380, 16114318, 32228636, 40285795, 80571590, 161143180]

約数ペア:

[(1, 161143180), (2, 80571590), (4, 40285795), (5, 32228636), (10, 16114318), (11, 14649380), (19, 8481220), (20, 8057159), (22, 7324690), (38, 4240610), (44, 3662345), (55, 2929876), (76, 2120305), (95, 1696244), (110, 1464938), (190, 848122), (209, 771020), (220, 732469), (361, 446380), (380, 424061), (418, 385510), (722, 223190), (836, 192755), (1045, 154204), (1444, 111595), (1805, 89276), (2029, 79420), (2090, 77102), (3610, 44638), (3971, 40580), (4058, 39710), (4180, 38551), (7220, 22319), (7942, 20290), (8116, 19855), (10145, 15884)]