81374720

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:288

約数の個数: 160

約数和(自身を含む): 235699200

約数和(自身を除く): 154324480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 128, 133, 140, 152, 160, 190, 224, 239, 256, 266, 280, 304, 320, 380, 448, 478, 512, 532, 560, 608, 640, 665, 760, 896, 956, 1064, 1120, 1195, 1216, 1280, 1330, 1520, 1673, 1792, 1912, 2128, 2240, 2390, 2432, 2560, 2660, 3040, 3346, 3584, 3824, 4256, 4480, 4541, 4780, 4864, 5320, 6080, 6692, 7648, 8365, 8512, 8960, 9082, 9560, 9728, 10640, 12160, 13384, 15296, 16730, 17024, 17920, 18164, 19120, 21280, 22705, 24320, 26768, 30592, 31787, 33460, 34048, 36328, 38240, 42560, 45410, 48640, 53536, 61184, 63574, 66920, 68096, 72656, 76480, 85120, 90820, 107072, 122368, 127148, 133840, 145312, 152960, 158935, 170240, 181640, 214144, 254296, 267680, 290624, 305920, 317870, 340480, 363280, 428288, 508592, 535360, 581248, 611840, 635740, 726560, 856576, 1017184, 1070720, 1162496, 1271480, 1453120, 2034368, 2141440, 2324992, 2542960, 2906240, 4068736, 4282880, 5085920, 5812480, 8137472, 10171840, 11624960, 16274944, 20343680, 40687360, 81374720]

約数ペア:

[(1, 81374720), (2, 40687360), (4, 20343680), (5, 16274944), (7, 11624960), (8, 10171840), (10, 8137472), (14, 5812480), (16, 5085920), (19, 4282880), (20, 4068736), (28, 2906240), (32, 2542960), (35, 2324992), (38, 2141440), (40, 2034368), (56, 1453120), (64, 1271480), (70, 1162496), (76, 1070720), (80, 1017184), (95, 856576), (112, 726560), (128, 635740), (133, 611840), (140, 581248), (152, 535360), (160, 508592), (190, 428288), (224, 363280), (239, 340480), (256, 317870), (266, 305920), (280, 290624), (304, 267680), (320, 254296), (380, 214144), (448, 181640), (478, 170240), (512, 158935), (532, 152960), (560, 145312), (608, 133840), (640, 127148), (665, 122368), (760, 107072), (896, 90820), (956, 85120), (1064, 76480), (1120, 72656), (1195, 68096), (1216, 66920), (1280, 63574), (1330, 61184), (1520, 53536), (1673, 48640), (1792, 45410), (1912, 42560), (2128, 38240), (2240, 36328), (2390, 34048), (2432, 33460), (2560, 31787), (2660, 30592), (3040, 26768), (3346, 24320), (3584, 22705), (3824, 21280), (4256, 19120), (4480, 18164), (4541, 17920), (4780, 17024), (4864, 16730), (5320, 15296), (6080, 13384), (6692, 12160), (7648, 10640), (8365, 9728), (8512, 9560), (8960, 9082)]