38640875

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 64

約数和(自身を含む): 61501440

約数和(自身を除く): 22860565

約数列:

[1, 5, 7, 13, 25, 35, 43, 65, 79, 91, 125, 175, 215, 301, 325, 395, 455, 553, 559, 875, 1027, 1075, 1505, 1625, 1975, 2275, 2765, 2795, 3397, 3913, 5135, 5375, 7189, 7525, 9875, 11375, 13825, 13975, 16985, 19565, 23779, 25675, 35945, 37625, 44161, 69125, 69875, 84925, 97825, 118895, 128375, 179725, 220805, 309127, 424625, 489125, 594475, 898625, 1104025, 1545635, 2972375, 5520125, 7728175, 38640875]

約数ペア:

[(1, 38640875), (5, 7728175), (7, 5520125), (13, 2972375), (25, 1545635), (35, 1104025), (43, 898625), (65, 594475), (79, 489125), (91, 424625), (125, 309127), (175, 220805), (215, 179725), (301, 128375), (325, 118895), (395, 97825), (455, 84925), (553, 69875), (559, 69125), (875, 44161), (1027, 37625), (1075, 35945), (1505, 25675), (1625, 23779), (1975, 19565), (2275, 16985), (2765, 13975), (2795, 13825), (3397, 11375), (3913, 9875), (5135, 7525), (5375, 7189)]