20332980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 144

約数和(自身を含む): 65729664

約数和(自身を除く): 45396684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 43, 45, 60, 71, 74, 86, 90, 111, 129, 142, 148, 172, 180, 185, 213, 215, 222, 258, 284, 333, 355, 370, 387, 426, 430, 444, 516, 555, 639, 645, 666, 710, 740, 774, 852, 860, 1065, 1110, 1278, 1290, 1332, 1420, 1548, 1591, 1665, 1935, 2130, 2220, 2556, 2580, 2627, 3053, 3182, 3195, 3330, 3870, 4260, 4773, 5254, 6106, 6364, 6390, 6660, 7740, 7881, 7955, 9159, 9546, 10508, 12212, 12780, 13135, 14319, 15265, 15762, 15910, 18318, 19092, 23643, 23865, 26270, 27477, 28638, 30530, 31524, 31820, 36636, 39405, 45795, 47286, 47730, 52540, 54954, 57276, 61060, 71595, 78810, 91590, 94572, 95460, 109908, 112961, 118215, 137385, 143190, 157620, 183180, 225922, 236430, 274770, 286380, 338883, 451844, 472860, 549540, 564805, 677766, 1016649, 1129610, 1355532, 1694415, 2033298, 2259220, 3388830, 4066596, 5083245, 6777660, 10166490, 20332980]

約数ペア:

[(1, 20332980), (2, 10166490), (3, 6777660), (4, 5083245), (5, 4066596), (6, 3388830), (9, 2259220), (10, 2033298), (12, 1694415), (15, 1355532), (18, 1129610), (20, 1016649), (30, 677766), (36, 564805), (37, 549540), (43, 472860), (45, 451844), (60, 338883), (71, 286380), (74, 274770), (86, 236430), (90, 225922), (111, 183180), (129, 157620), (142, 143190), (148, 137385), (172, 118215), (180, 112961), (185, 109908), (213, 95460), (215, 94572), (222, 91590), (258, 78810), (284, 71595), (333, 61060), (355, 57276), (370, 54954), (387, 52540), (426, 47730), (430, 47286), (444, 45795), (516, 39405), (555, 36636), (639, 31820), (645, 31524), (666, 30530), (710, 28638), (740, 27477), (774, 26270), (852, 23865), (860, 23643), (1065, 19092), (1110, 18318), (1278, 15910), (1290, 15762), (1332, 15265), (1420, 14319), (1548, 13135), (1591, 12780), (1665, 12212), (1935, 10508), (2130, 9546), (2220, 9159), (2556, 7955), (2580, 7881), (2627, 7740), (3053, 6660), (3182, 6390), (3195, 6364), (3330, 6106), (3870, 5254), (4260, 4773)]