18317840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13469}}^1$

素因数の和:13499

約数の個数: 40

約数和(自身を含む): 45097560

約数和(自身を除く): 26779720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13469, 26938, 53876, 67345, 107752, 134690, 215504, 228973, 269380, 457946, 538760, 915892, 1077520, 1144865, 1831784, 2289730, 3663568, 4579460, 9158920, 18317840]

約数ペア:

[(1, 18317840), (2, 9158920), (4, 4579460), (5, 3663568), (8, 2289730), (10, 1831784), (16, 1144865), (17, 1077520), (20, 915892), (34, 538760), (40, 457946), (68, 269380), (80, 228973), (85, 215504), (136, 134690), (170, 107752), (272, 67345), (340, 53876), (680, 26938), (1360, 13469)]