21000895536

素因数分解:

$2^4\times 3^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{135329}}^1$

素因数の和:135454

約数の個数: 80

約数和(自身を含む): 56182520160

約数和(自身を除く): 35181624624

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 53, 61, 106, 122, 159, 183, 212, 244, 318, 366, 424, 488, 636, 732, 848, 976, 1272, 1464, 2544, 2928, 3233, 6466, 9699, 12932, 19398, 25864, 38796, 51728, 77592, 135329, 155184, 270658, 405987, 541316, 811974, 1082632, 1623948, 2165264, 3247896, 6495792, 7172437, 8255069, 14344874, 16510138, 21517311, 24765207, 28689748, 33020276, 43034622, 49530414, 57379496, 66040552, 86069244, 99060828, 114758992, 132081104, 172138488, 198121656, 344276976, 396243312, 437518657, 875037314, 1312555971, 1750074628, 2625111942, 3500149256, 5250223884, 7000298512, 10500447768, 21000895536]

約数ペア:

[(1, 21000895536), (2, 10500447768), (3, 7000298512), (4, 5250223884), (6, 3500149256), (8, 2625111942), (12, 1750074628), (16, 1312555971), (24, 875037314), (48, 437518657), (53, 396243312), (61, 344276976), (106, 198121656), (122, 172138488), (159, 132081104), (183, 114758992), (212, 99060828), (244, 86069244), (318, 66040552), (366, 57379496), (424, 49530414), (488, 43034622), (636, 33020276), (732, 28689748), (848, 24765207), (976, 21517311), (1272, 16510138), (1464, 14344874), (2544, 8255069), (2928, 7172437), (3233, 6495792), (6466, 3247896), (9699, 2165264), (12932, 1623948), (19398, 1082632), (25864, 811974), (38796, 541316), (51728, 405987), (77592, 270658), (135329, 155184)]