21265998845

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{6421}}^1$

素因数の和:6726

約数の個数: 64

約数和(自身を含む): 32625815040

約数和(自身を除く): 11359816195

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 251, 377, 455, 1015, 1255, 1757, 1885, 2639, 3263, 6421, 7279, 8785, 13195, 16315, 22841, 32105, 36395, 44947, 50953, 83473, 94627, 114205, 186209, 224735, 254765, 417365, 473135, 584311, 662389, 931045, 1303463, 1611671, 2420717, 2921555, 3311945, 6517315, 8058355, 11281697, 12103585, 16945019, 20951723, 46738459, 56408485, 84725095, 104758615, 146662061, 233692295, 327169213, 607599967, 733310305, 1635846065, 3037999835, 4253199769, 21265998845]

約数ペア:

[(1, 21265998845), (5, 4253199769), (7, 3037999835), (13, 1635846065), (29, 733310305), (35, 607599967), (65, 327169213), (91, 233692295), (145, 146662061), (203, 104758615), (251, 84725095), (377, 56408485), (455, 46738459), (1015, 20951723), (1255, 16945019), (1757, 12103585), (1885, 11281697), (2639, 8058355), (3263, 6517315), (6421, 3311945), (7279, 2921555), (8785, 2420717), (13195, 1611671), (16315, 1303463), (22841, 931045), (32105, 662389), (36395, 584311), (44947, 473135), (50953, 417365), (83473, 254765), (94627, 224735), (114205, 186209)]