18872595

素因数分解:

$3^5\times 5^1\times 7^2\times {\mathrm{317}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 39587184

約数和(自身を除く): 20714589

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 243, 245, 315, 317, 405, 441, 567, 735, 945, 951, 1215, 1323, 1585, 1701, 2205, 2219, 2835, 2853, 3969, 4755, 6615, 6657, 8505, 8559, 11095, 11907, 14265, 15533, 19845, 19971, 25677, 33285, 42795, 46599, 59535, 59913, 77031, 77665, 99855, 128385, 139797, 179739, 232995, 299565, 385155, 419391, 539217, 698985, 898695, 1258173, 2096955, 2696085, 3774519, 6290865, 18872595]

約数ペア:

[(1, 18872595), (3, 6290865), (5, 3774519), (7, 2696085), (9, 2096955), (15, 1258173), (21, 898695), (27, 698985), (35, 539217), (45, 419391), (49, 385155), (63, 299565), (81, 232995), (105, 179739), (135, 139797), (147, 128385), (189, 99855), (243, 77665), (245, 77031), (315, 59913), (317, 59535), (405, 46599), (441, 42795), (567, 33285), (735, 25677), (945, 19971), (951, 19845), (1215, 15533), (1323, 14265), (1585, 11907), (1701, 11095), (2205, 8559), (2219, 8505), (2835, 6657), (2853, 6615), (3969, 4755)]