19688940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 65288160

約数和(自身を除く): 45599220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 101, 108, 114, 135, 171, 180, 190, 202, 228, 270, 285, 303, 342, 361, 380, 404, 505, 513, 540, 570, 606, 684, 722, 855, 909, 1010, 1026, 1083, 1140, 1212, 1444, 1515, 1710, 1805, 1818, 1919, 2020, 2052, 2166, 2565, 2727, 3030, 3249, 3420, 3610, 3636, 3838, 4332, 4545, 5130, 5415, 5454, 5757, 6060, 6498, 7220, 7676, 9090, 9595, 9747, 10260, 10830, 10908, 11514, 12996, 13635, 16245, 17271, 18180, 19190, 19494, 21660, 23028, 27270, 28785, 32490, 34542, 36461, 38380, 38988, 48735, 51813, 54540, 57570, 64980, 69084, 72922, 86355, 97470, 103626, 109383, 115140, 145844, 172710, 182305, 194940, 207252, 218766, 259065, 328149, 345420, 364610, 437532, 518130, 546915, 656298, 729220, 984447, 1036260, 1093830, 1312596, 1640745, 1968894, 2187660, 3281490, 3937788, 4922235, 6562980, 9844470, 19688940]

約数ペア:

[(1, 19688940), (2, 9844470), (3, 6562980), (4, 4922235), (5, 3937788), (6, 3281490), (9, 2187660), (10, 1968894), (12, 1640745), (15, 1312596), (18, 1093830), (19, 1036260), (20, 984447), (27, 729220), (30, 656298), (36, 546915), (38, 518130), (45, 437532), (54, 364610), (57, 345420), (60, 328149), (76, 259065), (90, 218766), (95, 207252), (101, 194940), (108, 182305), (114, 172710), (135, 145844), (171, 115140), (180, 109383), (190, 103626), (202, 97470), (228, 86355), (270, 72922), (285, 69084), (303, 64980), (342, 57570), (361, 54540), (380, 51813), (404, 48735), (505, 38988), (513, 38380), (540, 36461), (570, 34542), (606, 32490), (684, 28785), (722, 27270), (855, 23028), (909, 21660), (1010, 19494), (1026, 19190), (1083, 18180), (1140, 17271), (1212, 16245), (1444, 13635), (1515, 12996), (1710, 11514), (1805, 10908), (1818, 10830), (1919, 10260), (2020, 9747), (2052, 9595), (2166, 9090), (2565, 7676), (2727, 7220), (3030, 6498), (3249, 6060), (3420, 5757), (3610, 5454), (3636, 5415), (3838, 5130), (4332, 4545)]