20804915925

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{1277}}^1$

素因数の和:1452

約数の個数: 144

約数和(自身を含む): 40708287360

約数和(自身を除く): 19903371435

約数列:

[1, 3, 5, 9, 15, 19, 25, 37, 45, 57, 75, 95, 103, 111, 171, 185, 225, 285, 309, 333, 475, 515, 555, 703, 855, 925, 927, 1277, 1425, 1545, 1665, 1957, 2109, 2575, 2775, 3515, 3811, 3831, 4275, 4635, 5871, 6327, 6385, 7725, 8325, 9785, 10545, 11433, 11493, 17575, 17613, 19055, 19155, 23175, 24263, 29355, 31635, 31925, 34299, 47249, 48925, 52725, 57165, 57465, 72409, 72789, 88065, 95275, 95775, 121315, 131531, 141747, 146775, 158175, 171495, 217227, 218367, 236245, 285825, 287325, 362045, 363945, 394593, 425241, 440325, 606575, 651681, 657655, 708735, 857475, 897731, 1086135, 1091835, 1181225, 1183779, 1810225, 1819725, 1972965, 2126205, 2499089, 2693193, 3258405, 3288275, 3543675, 4488655, 4866647, 5430675, 5459175, 5918895, 7497267, 8079579, 9864825, 10631025, 12495445, 13465965, 14599941, 16292025, 22443275, 22491801, 24333235, 29594475, 37486335, 40397895, 43799823, 62477225, 67329825, 72999705, 92466293, 112459005, 121666175, 187431675, 201989475, 218999115, 277398879, 364998525, 462331465, 562295025, 832196637, 1094995575, 1386994395, 2311657325, 4160983185, 6934971975, 20804915925]

約数ペア:

[(1, 20804915925), (3, 6934971975), (5, 4160983185), (9, 2311657325), (15, 1386994395), (19, 1094995575), (25, 832196637), (37, 562295025), (45, 462331465), (57, 364998525), (75, 277398879), (95, 218999115), (103, 201989475), (111, 187431675), (171, 121666175), (185, 112459005), (225, 92466293), (285, 72999705), (309, 67329825), (333, 62477225), (475, 43799823), (515, 40397895), (555, 37486335), (703, 29594475), (855, 24333235), (925, 22491801), (927, 22443275), (1277, 16292025), (1425, 14599941), (1545, 13465965), (1665, 12495445), (1957, 10631025), (2109, 9864825), (2575, 8079579), (2775, 7497267), (3515, 5918895), (3811, 5459175), (3831, 5430675), (4275, 4866647), (4635, 4488655), (5871, 3543675), (6327, 3288275), (6385, 3258405), (7725, 2693193), (8325, 2499089), (9785, 2126205), (10545, 1972965), (11433, 1819725), (11493, 1810225), (17575, 1183779), (17613, 1181225), (19055, 1091835), (19155, 1086135), (23175, 897731), (24263, 857475), (29355, 708735), (31635, 657655), (31925, 651681), (34299, 606575), (47249, 440325), (48925, 425241), (52725, 394593), (57165, 363945), (57465, 362045), (72409, 287325), (72789, 285825), (88065, 236245), (95275, 218367), (95775, 217227), (121315, 171495), (131531, 158175), (141747, 146775)]