20216489215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1\times {\mathrm{17257}}^1$

素因数の和:17611

約数の個数: 32

約数和(自身を含む): 26615977920

約数和(自身を除く): 6399488705

約数列:

[1, 5, 13, 65, 67, 269, 335, 871, 1345, 3497, 4355, 17257, 17485, 18023, 86285, 90115, 224341, 234299, 1121705, 1156219, 1171495, 4642133, 5781095, 15030847, 23210665, 60347729, 75154235, 301738645, 311022911, 1555114555, 4043297843, 20216489215]

約数ペア:

[(1, 20216489215), (5, 4043297843), (13, 1555114555), (65, 311022911), (67, 301738645), (269, 75154235), (335, 60347729), (871, 23210665), (1345, 15030847), (3497, 5781095), (4355, 4642133), (17257, 1171495), (17485, 1156219), (18023, 1121705), (86285, 234299), (90115, 224341)]