21998520040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1\times {\mathrm{6551}}^1$

素因数の和:6815

約数の個数: 128

約数和(自身を含む): 57741465600

約数和(自身を除く): 35742945560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 179, 268, 280, 335, 358, 469, 536, 670, 716, 895, 938, 1253, 1340, 1432, 1790, 1876, 2345, 2506, 2680, 3580, 3752, 4690, 5012, 6265, 6551, 7160, 9380, 10024, 11993, 12530, 13102, 18760, 23986, 25060, 26204, 32755, 45857, 47972, 50120, 52408, 59965, 65510, 83951, 91714, 95944, 119930, 131020, 167902, 183428, 229285, 239860, 262040, 335804, 366856, 419755, 438917, 458570, 479720, 671608, 839510, 877834, 917140, 1172629, 1679020, 1755668, 1834280, 2194585, 2345258, 3072419, 3358040, 3511336, 4389170, 4690516, 5863145, 6144838, 8208403, 8778340, 9381032, 11726290, 12289676, 15362095, 16416806, 17556680, 23452580, 24579352, 30724190, 32833612, 41042015, 46905160, 61448380, 65667224, 78566143, 82084030, 122896760, 157132286, 164168060, 314264572, 328336120, 392830715, 549963001, 628529144, 785661430, 1099926002, 1571322860, 2199852004, 2749815005, 3142645720, 4399704008, 5499630010, 10999260020, 21998520040]

約数ペア:

[(1, 21998520040), (2, 10999260020), (4, 5499630010), (5, 4399704008), (7, 3142645720), (8, 2749815005), (10, 2199852004), (14, 1571322860), (20, 1099926002), (28, 785661430), (35, 628529144), (40, 549963001), (56, 392830715), (67, 328336120), (70, 314264572), (134, 164168060), (140, 157132286), (179, 122896760), (268, 82084030), (280, 78566143), (335, 65667224), (358, 61448380), (469, 46905160), (536, 41042015), (670, 32833612), (716, 30724190), (895, 24579352), (938, 23452580), (1253, 17556680), (1340, 16416806), (1432, 15362095), (1790, 12289676), (1876, 11726290), (2345, 9381032), (2506, 8778340), (2680, 8208403), (3580, 6144838), (3752, 5863145), (4690, 4690516), (5012, 4389170), (6265, 3511336), (6551, 3358040), (7160, 3072419), (9380, 2345258), (10024, 2194585), (11993, 1834280), (12530, 1755668), (13102, 1679020), (18760, 1172629), (23986, 917140), (25060, 877834), (26204, 839510), (32755, 671608), (45857, 479720), (47972, 458570), (50120, 438917), (52408, 419755), (59965, 366856), (65510, 335804), (83951, 262040), (91714, 239860), (95944, 229285), (119930, 183428), (131020, 167902)]