217912240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:879

約数の個数: 160

約数和(自身を含む): 641208960

約数和(自身を除く): 423296720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 37, 40, 52, 56, 65, 70, 74, 80, 91, 104, 112, 130, 140, 148, 182, 185, 208, 259, 260, 280, 296, 364, 370, 455, 481, 518, 520, 560, 592, 728, 740, 809, 910, 962, 1036, 1040, 1295, 1456, 1480, 1618, 1820, 1924, 2072, 2405, 2590, 2960, 3236, 3367, 3640, 3848, 4045, 4144, 4810, 5180, 5663, 6472, 6734, 7280, 7696, 8090, 9620, 10360, 10517, 11326, 12944, 13468, 16180, 16835, 19240, 20720, 21034, 22652, 26936, 28315, 29933, 32360, 33670, 38480, 42068, 45304, 52585, 53872, 56630, 59866, 64720, 67340, 73619, 84136, 90608, 105170, 113260, 119732, 134680, 147238, 149665, 168272, 209531, 210340, 226520, 239464, 269360, 294476, 299330, 368095, 389129, 419062, 420680, 453040, 478928, 588952, 598660, 736190, 778258, 838124, 841360, 1047655, 1177904, 1197320, 1472380, 1556516, 1676248, 1945645, 2095310, 2394640, 2723903, 2944760, 3113032, 3352496, 3891290, 4190620, 5447806, 5889520, 6226064, 7782580, 8381240, 10895612, 13619515, 15565160, 16762480, 21791224, 27239030, 31130320, 43582448, 54478060, 108956120, 217912240]

約数ペア:

[(1, 217912240), (2, 108956120), (4, 54478060), (5, 43582448), (7, 31130320), (8, 27239030), (10, 21791224), (13, 16762480), (14, 15565160), (16, 13619515), (20, 10895612), (26, 8381240), (28, 7782580), (35, 6226064), (37, 5889520), (40, 5447806), (52, 4190620), (56, 3891290), (65, 3352496), (70, 3113032), (74, 2944760), (80, 2723903), (91, 2394640), (104, 2095310), (112, 1945645), (130, 1676248), (140, 1556516), (148, 1472380), (182, 1197320), (185, 1177904), (208, 1047655), (259, 841360), (260, 838124), (280, 778258), (296, 736190), (364, 598660), (370, 588952), (455, 478928), (481, 453040), (518, 420680), (520, 419062), (560, 389129), (592, 368095), (728, 299330), (740, 294476), (809, 269360), (910, 239464), (962, 226520), (1036, 210340), (1040, 209531), (1295, 168272), (1456, 149665), (1480, 147238), (1618, 134680), (1820, 119732), (1924, 113260), (2072, 105170), (2405, 90608), (2590, 84136), (2960, 73619), (3236, 67340), (3367, 64720), (3640, 59866), (3848, 56630), (4045, 53872), (4144, 52585), (4810, 45304), (5180, 42068), (5663, 38480), (6472, 33670), (6734, 32360), (7280, 29933), (7696, 28315), (8090, 26936), (9620, 22652), (10360, 21034), (10517, 20720), (11326, 19240), (12944, 16835), (13468, 16180)]