20121738960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{126839}}^1$

素因数の和:127516

約数の個数: 80

約数和(自身を含む): 62472251520

約数和(自身を除く): 42350512560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 661, 1322, 1983, 2644, 3305, 3966, 5288, 6610, 7932, 9915, 10576, 13220, 15864, 19830, 26440, 31728, 39660, 52880, 79320, 126839, 158640, 253678, 380517, 507356, 634195, 761034, 1014712, 1268390, 1522068, 1902585, 2029424, 2536780, 3044136, 3805170, 5073560, 6088272, 7610340, 10147120, 15220680, 30441360, 83840579, 167681158, 251521737, 335362316, 419202895, 503043474, 670724632, 838405790, 1006086948, 1257608685, 1341449264, 1676811580, 2012173896, 2515217370, 3353623160, 4024347792, 5030434740, 6707246320, 10060869480, 20121738960]

約数ペア:

[(1, 20121738960), (2, 10060869480), (3, 6707246320), (4, 5030434740), (5, 4024347792), (6, 3353623160), (8, 2515217370), (10, 2012173896), (12, 1676811580), (15, 1341449264), (16, 1257608685), (20, 1006086948), (24, 838405790), (30, 670724632), (40, 503043474), (48, 419202895), (60, 335362316), (80, 251521737), (120, 167681158), (240, 83840579), (661, 30441360), (1322, 15220680), (1983, 10147120), (2644, 7610340), (3305, 6088272), (3966, 5073560), (5288, 3805170), (6610, 3044136), (7932, 2536780), (9915, 2029424), (10576, 1902585), (13220, 1522068), (15864, 1268390), (19830, 1014712), (26440, 761034), (31728, 634195), (39660, 507356), (52880, 380517), (79320, 253678), (126839, 158640)]