19888236

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:363

約数の個数: 72

約数和(自身を含む): 52835328

約数和(自身を除く): 32947092

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 71, 93, 124, 142, 186, 213, 251, 279, 284, 372, 426, 502, 558, 639, 753, 852, 1004, 1116, 1278, 1506, 2201, 2259, 2556, 3012, 4402, 4518, 6603, 7781, 8804, 9036, 13206, 15562, 17821, 19809, 23343, 26412, 31124, 35642, 39618, 46686, 53463, 70029, 71284, 79236, 93372, 106926, 140058, 160389, 213852, 280116, 320778, 552451, 641556, 1104902, 1657353, 2209804, 3314706, 4972059, 6629412, 9944118, 19888236]

約数ペア:

[(1, 19888236), (2, 9944118), (3, 6629412), (4, 4972059), (6, 3314706), (9, 2209804), (12, 1657353), (18, 1104902), (31, 641556), (36, 552451), (62, 320778), (71, 280116), (93, 213852), (124, 160389), (142, 140058), (186, 106926), (213, 93372), (251, 79236), (279, 71284), (284, 70029), (372, 53463), (426, 46686), (502, 39618), (558, 35642), (639, 31124), (753, 26412), (852, 23343), (1004, 19809), (1116, 17821), (1278, 15562), (1506, 13206), (2201, 9036), (2259, 8804), (2556, 7781), (3012, 6603), (4402, 4518)]