20343680

素因数分解:

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

素因数の和:284

約数の個数: 128

約数和(自身を含む): 58752000

約数和(自身を除く): 38408320

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, 266, 280, 304, 320, 380, 448, 478, 532, 560, 608, 640, 665, 760, 896, 956, 1064, 1120, 1195, 1216, 1330, 1520, 1673, 1912, 2128, 2240, 2390, 2432, 2660, 3040, 3346, 3824, 4256, 4480, 4541, 4780, 5320, 6080, 6692, 7648, 8365, 8512, 9082, 9560, 10640, 12160, 13384, 15296, 16730, 17024, 18164, 19120, 21280, 22705, 26768, 30592, 31787, 33460, 36328, 38240, 42560, 45410, 53536, 63574, 66920, 72656, 76480, 85120, 90820, 107072, 127148, 133840, 145312, 152960, 158935, 181640, 214144, 254296, 267680, 290624, 317870, 363280, 508592, 535360, 581248, 635740, 726560, 1017184, 1070720, 1271480, 1453120, 2034368, 2542960, 2906240, 4068736, 5085920, 10171840, 20343680]

約数ペア:

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