20587840

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:145

約数の個数: 168

約数和(自身を含む): 62023752

約数和(自身を除く): 41435912

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 101, 104, 112, 130, 140, 160, 182, 196, 202, 208, 224, 245, 260, 280, 320, 364, 392, 404, 416, 448, 455, 490, 505, 520, 560, 637, 707, 728, 784, 808, 832, 910, 980, 1010, 1040, 1120, 1274, 1313, 1414, 1456, 1568, 1616, 1820, 1960, 2020, 2080, 2240, 2548, 2626, 2828, 2912, 3136, 3185, 3232, 3535, 3640, 3920, 4040, 4160, 4949, 5096, 5252, 5656, 5824, 6370, 6464, 6565, 7070, 7280, 7840, 8080, 9191, 9898, 10192, 10504, 11312, 12740, 13130, 14140, 14560, 15680, 16160, 18382, 19796, 20384, 21008, 22624, 24745, 25480, 26260, 28280, 29120, 32320, 36764, 39592, 40768, 42016, 45248, 45955, 49490, 50960, 52520, 56560, 64337, 73528, 79184, 84032, 91910, 98980, 101920, 105040, 113120, 128674, 147056, 158368, 183820, 197960, 203840, 210080, 226240, 257348, 294112, 316736, 321685, 367640, 395920, 420160, 514696, 588224, 643370, 735280, 791840, 1029392, 1286740, 1470560, 1583680, 2058784, 2573480, 2941120, 4117568, 5146960, 10293920, 20587840]

約数ペア:

[(1, 20587840), (2, 10293920), (4, 5146960), (5, 4117568), (7, 2941120), (8, 2573480), (10, 2058784), (13, 1583680), (14, 1470560), (16, 1286740), (20, 1029392), (26, 791840), (28, 735280), (32, 643370), (35, 588224), (40, 514696), (49, 420160), (52, 395920), (56, 367640), (64, 321685), (65, 316736), (70, 294112), (80, 257348), (91, 226240), (98, 210080), (101, 203840), (104, 197960), (112, 183820), (130, 158368), (140, 147056), (160, 128674), (182, 113120), (196, 105040), (202, 101920), (208, 98980), (224, 91910), (245, 84032), (260, 79184), (280, 73528), (320, 64337), (364, 56560), (392, 52520), (404, 50960), (416, 49490), (448, 45955), (455, 45248), (490, 42016), (505, 40768), (520, 39592), (560, 36764), (637, 32320), (707, 29120), (728, 28280), (784, 26260), (808, 25480), (832, 24745), (910, 22624), (980, 21008), (1010, 20384), (1040, 19796), (1120, 18382), (1274, 16160), (1313, 15680), (1414, 14560), (1456, 14140), (1568, 13130), (1616, 12740), (1820, 11312), (1960, 10504), (2020, 10192), (2080, 9898), (2240, 9191), (2548, 8080), (2626, 7840), (2828, 7280), (2912, 7070), (3136, 6565), (3185, 6464), (3232, 6370), (3535, 5824), (3640, 5656), (3920, 5252), (4040, 5096), (4160, 4949)]