28478340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{757}}^1$

素因数の和:802

約数の個数: 144

約数和(自身を含む): 99328320

約数和(自身を除く): 70849980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 495, 570, 627, 660, 684, 757, 836, 855, 990, 1045, 1140, 1254, 1514, 1710, 1881, 1980, 2090, 2271, 2508, 3028, 3135, 3420, 3762, 3785, 4180, 4542, 6270, 6813, 7524, 7570, 8327, 9084, 9405, 11355, 12540, 13626, 14383, 15140, 16654, 18810, 22710, 24981, 27252, 28766, 33308, 34065, 37620, 41635, 43149, 45420, 49962, 57532, 68130, 71915, 74943, 83270, 86298, 99924, 124905, 129447, 136260, 143830, 149886, 158213, 166540, 172596, 215745, 249810, 258894, 287660, 299772, 316426, 374715, 431490, 474639, 499620, 517788, 632852, 647235, 749430, 791065, 862980, 949278, 1294470, 1423917, 1498860, 1582130, 1898556, 2373195, 2588940, 2847834, 3164260, 4746390, 5695668, 7119585, 9492780, 14239170, 28478340]

約数ペア:

[(1, 28478340), (2, 14239170), (3, 9492780), (4, 7119585), (5, 5695668), (6, 4746390), (9, 3164260), (10, 2847834), (11, 2588940), (12, 2373195), (15, 1898556), (18, 1582130), (19, 1498860), (20, 1423917), (22, 1294470), (30, 949278), (33, 862980), (36, 791065), (38, 749430), (44, 647235), (45, 632852), (55, 517788), (57, 499620), (60, 474639), (66, 431490), (76, 374715), (90, 316426), (95, 299772), (99, 287660), (110, 258894), (114, 249810), (132, 215745), (165, 172596), (171, 166540), (180, 158213), (190, 149886), (198, 143830), (209, 136260), (220, 129447), (228, 124905), (285, 99924), (330, 86298), (342, 83270), (380, 74943), (396, 71915), (418, 68130), (495, 57532), (570, 49962), (627, 45420), (660, 43149), (684, 41635), (757, 37620), (836, 34065), (855, 33308), (990, 28766), (1045, 27252), (1140, 24981), (1254, 22710), (1514, 18810), (1710, 16654), (1881, 15140), (1980, 14383), (2090, 13626), (2271, 12540), (2508, 11355), (3028, 9405), (3135, 9084), (3420, 8327), (3762, 7570), (3785, 7524), (4180, 6813), (4542, 6270)]