20121247100

素因数分解:

$2^2\times 5^2\times {\mathrm{353}}^1\times {\mathrm{647}}^1\times {\mathrm{881}}^1$

素因数の和:1895

約数の個数: 72

約数和(自身を含む): 43904252448

約数和(自身を除く): 23783005348

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 353, 647, 706, 881, 1294, 1412, 1762, 1765, 2588, 3235, 3524, 3530, 4405, 6470, 7060, 8810, 8825, 12940, 16175, 17620, 17650, 22025, 32350, 35300, 44050, 64700, 88100, 228391, 310993, 456782, 570007, 621986, 913564, 1140014, 1141955, 1243972, 1554965, 2280028, 2283910, 2850035, 3109930, 4567820, 5700070, 5709775, 6219860, 7774825, 11400140, 11419550, 14250175, 15549650, 22839100, 28500350, 31099300, 57000700, 201212471, 402424942, 804849884, 1006062355, 2012124710, 4024249420, 5030311775, 10060623550, 20121247100]

約数ペア:

[(1, 20121247100), (2, 10060623550), (4, 5030311775), (5, 4024249420), (10, 2012124710), (20, 1006062355), (25, 804849884), (50, 402424942), (100, 201212471), (353, 57000700), (647, 31099300), (706, 28500350), (881, 22839100), (1294, 15549650), (1412, 14250175), (1762, 11419550), (1765, 11400140), (2588, 7774825), (3235, 6219860), (3524, 5709775), (3530, 5700070), (4405, 4567820), (6470, 3109930), (7060, 2850035), (8810, 2283910), (8825, 2280028), (12940, 1554965), (16175, 1243972), (17620, 1141955), (17650, 1140014), (22025, 913564), (32350, 621986), (35300, 570007), (44050, 456782), (64700, 310993), (88100, 228391)]