19710900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{181}}^1$

素因数の和:223

約数の個数: 162

約数和(自身を含む): 68285126

約数和(自身を除く): 48574226

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 121, 132, 150, 165, 180, 181, 198, 220, 225, 242, 275, 300, 330, 362, 363, 396, 450, 484, 495, 543, 550, 605, 660, 724, 726, 825, 900, 905, 990, 1086, 1089, 1100, 1210, 1452, 1629, 1650, 1810, 1815, 1980, 1991, 2172, 2178, 2420, 2475, 2715, 3025, 3258, 3300, 3620, 3630, 3982, 4356, 4525, 4950, 5430, 5445, 5973, 6050, 6516, 7260, 7964, 8145, 9050, 9075, 9900, 9955, 10860, 10890, 11946, 12100, 13575, 16290, 17919, 18100, 18150, 19910, 21780, 21901, 23892, 27150, 27225, 29865, 32580, 35838, 36300, 39820, 40725, 43802, 49775, 54300, 54450, 59730, 65703, 71676, 81450, 87604, 89595, 99550, 108900, 109505, 119460, 131406, 149325, 162900, 179190, 197109, 199100, 219010, 262812, 298650, 328515, 358380, 394218, 438020, 447975, 547525, 597300, 657030, 788436, 895950, 985545, 1095050, 1314060, 1642575, 1791900, 1971090, 2190100, 3285150, 3942180, 4927725, 6570300, 9855450, 19710900]

約数ペア:

[(1, 19710900), (2, 9855450), (3, 6570300), (4, 4927725), (5, 3942180), (6, 3285150), (9, 2190100), (10, 1971090), (11, 1791900), (12, 1642575), (15, 1314060), (18, 1095050), (20, 985545), (22, 895950), (25, 788436), (30, 657030), (33, 597300), (36, 547525), (44, 447975), (45, 438020), (50, 394218), (55, 358380), (60, 328515), (66, 298650), (75, 262812), (90, 219010), (99, 199100), (100, 197109), (110, 179190), (121, 162900), (132, 149325), (150, 131406), (165, 119460), (180, 109505), (181, 108900), (198, 99550), (220, 89595), (225, 87604), (242, 81450), (275, 71676), (300, 65703), (330, 59730), (362, 54450), (363, 54300), (396, 49775), (450, 43802), (484, 40725), (495, 39820), (543, 36300), (550, 35838), (605, 32580), (660, 29865), (724, 27225), (726, 27150), (825, 23892), (900, 21901), (905, 21780), (990, 19910), (1086, 18150), (1089, 18100), (1100, 17919), (1210, 16290), (1452, 13575), (1629, 12100), (1650, 11946), (1810, 10890), (1815, 10860), (1980, 9955), (1991, 9900), (2172, 9075), (2178, 9050), (2420, 8145), (2475, 7964), (2715, 7260), (3025, 6516), (3258, 6050), (3300, 5973), (3620, 5445), (3630, 5430), (3982, 4950), (4356, 4525)]