21398307843

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1\times {\mathrm{14821}}^1$

素因数の和:15555

約数の個数: 32

約数和(自身を含む): 31639871232

約数和(自身を除く): 10241563389

約数列:

[1, 3, 11, 33, 67, 201, 653, 737, 1959, 2211, 7183, 14821, 21549, 43751, 44463, 131253, 163031, 481261, 489093, 993007, 1443783, 2979021, 9678113, 10923077, 29034339, 32769231, 106459243, 319377729, 648433571, 1945300713, 7132769281, 21398307843]

約数ペア:

[(1, 21398307843), (3, 7132769281), (11, 1945300713), (33, 648433571), (67, 319377729), (201, 106459243), (653, 32769231), (737, 29034339), (1959, 10923077), (2211, 9678113), (7183, 2979021), (14821, 1443783), (21549, 993007), (43751, 489093), (44463, 481261), (131253, 163031)]