1987366477825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{770663}}^1$

素因数の和:770842

約数の個数: 48

約数和(自身を含む): 2666189174400

約数和(自身を除く): 678822696575

約数列:

[1, 5, 19, 25, 61, 89, 95, 305, 445, 475, 1159, 1525, 1691, 2225, 5429, 5795, 8455, 27145, 28975, 42275, 103151, 135725, 515755, 770663, 2578775, 3853315, 14642597, 19266575, 47010443, 68589007, 73212985, 235052215, 342945035, 366064925, 893198417, 1175261075, 1303191133, 1714725175, 4183929427, 4465992085, 6515955665, 20919647135, 22329960425, 32579778325, 79494659113, 104598235675, 397473295565, 1987366477825]

約数ペア:

[(1, 1987366477825), (5, 397473295565), (19, 104598235675), (25, 79494659113), (61, 32579778325), (89, 22329960425), (95, 20919647135), (305, 6515955665), (445, 4465992085), (475, 4183929427), (1159, 1714725175), (1525, 1303191133), (1691, 1175261075), (2225, 893198417), (5429, 366064925), (5795, 342945035), (8455, 235052215), (27145, 73212985), (28975, 68589007), (42275, 47010443), (103151, 19266575), (135725, 14642597), (515755, 3853315), (770663, 2578775)]