81407760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1031}}^1$

素因数の和:1101

約数の個数: 160

約数和(自身を含む): 294838272

約数和(自身を除く): 213430512

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 47, 48, 56, 60, 70, 80, 84, 94, 105, 112, 120, 140, 141, 168, 188, 210, 235, 240, 280, 282, 329, 336, 376, 420, 470, 560, 564, 658, 705, 752, 840, 940, 987, 1031, 1128, 1316, 1410, 1645, 1680, 1880, 1974, 2062, 2256, 2632, 2820, 3093, 3290, 3760, 3948, 4124, 4935, 5155, 5264, 5640, 6186, 6580, 7217, 7896, 8248, 9870, 10310, 11280, 12372, 13160, 14434, 15465, 15792, 16496, 19740, 20620, 21651, 24744, 26320, 28868, 30930, 36085, 39480, 41240, 43302, 48457, 49488, 57736, 61860, 72170, 78960, 82480, 86604, 96914, 108255, 115472, 123720, 144340, 145371, 173208, 193828, 216510, 242285, 247440, 288680, 290742, 339199, 346416, 387656, 433020, 484570, 577360, 581484, 678398, 726855, 775312, 866040, 969140, 1017597, 1162968, 1356796, 1453710, 1695995, 1732080, 1938280, 2035194, 2325936, 2713592, 2907420, 3391990, 3876560, 4070388, 5087985, 5427184, 5814840, 6783980, 8140776, 10175970, 11629680, 13567960, 16281552, 20351940, 27135920, 40703880, 81407760]

約数ペア:

[(1, 81407760), (2, 40703880), (3, 27135920), (4, 20351940), (5, 16281552), (6, 13567960), (7, 11629680), (8, 10175970), (10, 8140776), (12, 6783980), (14, 5814840), (15, 5427184), (16, 5087985), (20, 4070388), (21, 3876560), (24, 3391990), (28, 2907420), (30, 2713592), (35, 2325936), (40, 2035194), (42, 1938280), (47, 1732080), (48, 1695995), (56, 1453710), (60, 1356796), (70, 1162968), (80, 1017597), (84, 969140), (94, 866040), (105, 775312), (112, 726855), (120, 678398), (140, 581484), (141, 577360), (168, 484570), (188, 433020), (210, 387656), (235, 346416), (240, 339199), (280, 290742), (282, 288680), (329, 247440), (336, 242285), (376, 216510), (420, 193828), (470, 173208), (560, 145371), (564, 144340), (658, 123720), (705, 115472), (752, 108255), (840, 96914), (940, 86604), (987, 82480), (1031, 78960), (1128, 72170), (1316, 61860), (1410, 57736), (1645, 49488), (1680, 48457), (1880, 43302), (1974, 41240), (2062, 39480), (2256, 36085), (2632, 30930), (2820, 28868), (3093, 26320), (3290, 24744), (3760, 21651), (3948, 20620), (4124, 19740), (4935, 16496), (5155, 15792), (5264, 15465), (5640, 14434), (6186, 13160), (6580, 12372), (7217, 11280), (7896, 10310), (8248, 9870)]