20123557545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{21397}}^1$

素因数の和:21491

約数の個数: 96

約数和(自身を含む): 40599366912

約数和(自身を除く): 20475809367

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 53, 65, 91, 105, 159, 169, 195, 265, 273, 371, 455, 507, 689, 795, 845, 1113, 1183, 1365, 1855, 2067, 2535, 3445, 3549, 4823, 5565, 5915, 8957, 10335, 14469, 17745, 21397, 24115, 26871, 44785, 62699, 64191, 72345, 106985, 134355, 149779, 188097, 278161, 313495, 320955, 449337, 748895, 834483, 940485, 1134041, 1390805, 1947127, 2246685, 3402123, 3616093, 4172415, 5670205, 5841381, 7938287, 9735635, 10848279, 14742533, 17010615, 18080465, 23814861, 25312651, 29206905, 39691435, 44227599, 54241395, 73712665, 75937953, 103197731, 119074305, 126563255, 191652929, 221137995, 309593193, 379689765, 515988655, 574958787, 958264645, 1341570503, 1547965965, 2874793935, 4024711509, 6707852515, 20123557545]

約数ペア:

[(1, 20123557545), (3, 6707852515), (5, 4024711509), (7, 2874793935), (13, 1547965965), (15, 1341570503), (21, 958264645), (35, 574958787), (39, 515988655), (53, 379689765), (65, 309593193), (91, 221137995), (105, 191652929), (159, 126563255), (169, 119074305), (195, 103197731), (265, 75937953), (273, 73712665), (371, 54241395), (455, 44227599), (507, 39691435), (689, 29206905), (795, 25312651), (845, 23814861), (1113, 18080465), (1183, 17010615), (1365, 14742533), (1855, 10848279), (2067, 9735635), (2535, 7938287), (3445, 5841381), (3549, 5670205), (4823, 4172415), (5565, 3616093), (5915, 3402123), (8957, 2246685), (10335, 1947127), (14469, 1390805), (17745, 1134041), (21397, 940485), (24115, 834483), (26871, 748895), (44785, 449337), (62699, 320955), (64191, 313495), (72345, 278161), (106985, 188097), (134355, 149779)]