21343840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:117

約数の個数: 192

約数和(自身を含む): 65318400

約数和(自身を除く): 43974560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 28, 32, 34, 35, 38, 40, 56, 59, 68, 70, 76, 80, 85, 95, 112, 118, 119, 133, 136, 140, 152, 160, 170, 190, 224, 236, 238, 266, 272, 280, 295, 304, 323, 340, 380, 413, 472, 476, 532, 544, 560, 590, 595, 608, 646, 665, 680, 760, 826, 944, 952, 1003, 1064, 1120, 1121, 1180, 1190, 1292, 1330, 1360, 1520, 1615, 1652, 1888, 1904, 2006, 2065, 2128, 2242, 2261, 2360, 2380, 2584, 2660, 2720, 3040, 3230, 3304, 3808, 4012, 4130, 4256, 4484, 4522, 4720, 4760, 5015, 5168, 5320, 5605, 6460, 6608, 7021, 7847, 8024, 8260, 8968, 9044, 9440, 9520, 10030, 10336, 10640, 11210, 11305, 12920, 13216, 14042, 15694, 16048, 16520, 17936, 18088, 19040, 19057, 20060, 21280, 22420, 22610, 25840, 28084, 31388, 32096, 33040, 35105, 35872, 36176, 38114, 39235, 40120, 44840, 45220, 51680, 56168, 62776, 66080, 70210, 72352, 76228, 78470, 80240, 89680, 90440, 95285, 112336, 125552, 133399, 140420, 152456, 156940, 160480, 179360, 180880, 190570, 224672, 251104, 266798, 280840, 304912, 313880, 361760, 381140, 533596, 561680, 609824, 627760, 666995, 762280, 1067192, 1123360, 1255520, 1333990, 1524560, 2134384, 2667980, 3049120, 4268768, 5335960, 10671920, 21343840]

約数ペア:

[(1, 21343840), (2, 10671920), (4, 5335960), (5, 4268768), (7, 3049120), (8, 2667980), (10, 2134384), (14, 1524560), (16, 1333990), (17, 1255520), (19, 1123360), (20, 1067192), (28, 762280), (32, 666995), (34, 627760), (35, 609824), (38, 561680), (40, 533596), (56, 381140), (59, 361760), (68, 313880), (70, 304912), (76, 280840), (80, 266798), (85, 251104), (95, 224672), (112, 190570), (118, 180880), (119, 179360), (133, 160480), (136, 156940), (140, 152456), (152, 140420), (160, 133399), (170, 125552), (190, 112336), (224, 95285), (236, 90440), (238, 89680), (266, 80240), (272, 78470), (280, 76228), (295, 72352), (304, 70210), (323, 66080), (340, 62776), (380, 56168), (413, 51680), (472, 45220), (476, 44840), (532, 40120), (544, 39235), (560, 38114), (590, 36176), (595, 35872), (608, 35105), (646, 33040), (665, 32096), (680, 31388), (760, 28084), (826, 25840), (944, 22610), (952, 22420), (1003, 21280), (1064, 20060), (1120, 19057), (1121, 19040), (1180, 18088), (1190, 17936), (1292, 16520), (1330, 16048), (1360, 15694), (1520, 14042), (1615, 13216), (1652, 12920), (1888, 11305), (1904, 11210), (2006, 10640), (2065, 10336), (2128, 10030), (2242, 9520), (2261, 9440), (2360, 9044), (2380, 8968), (2584, 8260), (2660, 8024), (2720, 7847), (3040, 7021), (3230, 6608), (3304, 6460), (3808, 5605), (4012, 5320), (4130, 5168), (4256, 5015), (4484, 4760), (4522, 4720)]