28286820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{919}}^1$

素因数の和:959

約数の個数: 120

約数和(自身を含む): 93508800

約数和(自身を除く): 65221980

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, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 919, 1026, 1140, 1539, 1620, 1710, 1838, 2052, 2565, 2757, 3078, 3420, 3676, 4595, 5130, 5514, 6156, 7695, 8271, 9190, 10260, 11028, 13785, 15390, 16542, 17461, 18380, 24813, 27570, 30780, 33084, 34922, 41355, 49626, 52383, 55140, 69844, 74439, 82710, 87305, 99252, 104766, 124065, 148878, 157149, 165420, 174610, 209532, 248130, 261915, 297756, 314298, 349220, 372195, 471447, 496260, 523830, 628596, 744390, 785745, 942894, 1047660, 1414341, 1488780, 1571490, 1885788, 2357235, 2828682, 3142980, 4714470, 5657364, 7071705, 9428940, 14143410, 28286820]

約数ペア:

[(1, 28286820), (2, 14143410), (3, 9428940), (4, 7071705), (5, 5657364), (6, 4714470), (9, 3142980), (10, 2828682), (12, 2357235), (15, 1885788), (18, 1571490), (19, 1488780), (20, 1414341), (27, 1047660), (30, 942894), (36, 785745), (38, 744390), (45, 628596), (54, 523830), (57, 496260), (60, 471447), (76, 372195), (81, 349220), (90, 314298), (95, 297756), (108, 261915), (114, 248130), (135, 209532), (162, 174610), (171, 165420), (180, 157149), (190, 148878), (228, 124065), (270, 104766), (285, 99252), (324, 87305), (342, 82710), (380, 74439), (405, 69844), (513, 55140), (540, 52383), (570, 49626), (684, 41355), (810, 34922), (855, 33084), (919, 30780), (1026, 27570), (1140, 24813), (1539, 18380), (1620, 17461), (1710, 16542), (1838, 15390), (2052, 13785), (2565, 11028), (2757, 10260), (3078, 9190), (3420, 8271), (3676, 7695), (4595, 6156), (5130, 5514)]