20554498908

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{639371}}^1$

素因数の和:639447

約数の個数: 72

約数和(自身を含む): 55855537920

約数和(自身を除く): 35301039012

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 47, 57, 76, 94, 114, 141, 171, 188, 228, 282, 342, 423, 564, 684, 846, 893, 1692, 1786, 2679, 3572, 5358, 8037, 10716, 16074, 32148, 639371, 1278742, 1918113, 2557484, 3836226, 5754339, 7672452, 11508678, 12148049, 23017356, 24296098, 30050437, 36444147, 48592196, 60100874, 72888294, 90151311, 109332441, 120201748, 145776588, 180302622, 218664882, 270453933, 360605244, 437329764, 540907866, 570958303, 1081815732, 1141916606, 1712874909, 2283833212, 3425749818, 5138624727, 6851499636, 10277249454, 20554498908]

約数ペア:

[(1, 20554498908), (2, 10277249454), (3, 6851499636), (4, 5138624727), (6, 3425749818), (9, 2283833212), (12, 1712874909), (18, 1141916606), (19, 1081815732), (36, 570958303), (38, 540907866), (47, 437329764), (57, 360605244), (76, 270453933), (94, 218664882), (114, 180302622), (141, 145776588), (171, 120201748), (188, 109332441), (228, 90151311), (282, 72888294), (342, 60100874), (423, 48592196), (564, 36444147), (684, 30050437), (846, 24296098), (893, 23017356), (1692, 12148049), (1786, 11508678), (2679, 7672452), (3572, 5754339), (5358, 3836226), (8037, 2557484), (10716, 1918113), (16074, 1278742), (32148, 639371)]