20672595

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{443}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 38649312

約数和(自身を除く): 17976717

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 61, 85, 153, 183, 255, 305, 443, 549, 765, 915, 1037, 1329, 2215, 2745, 3111, 3987, 5185, 6645, 7531, 9333, 15555, 19935, 22593, 27023, 37655, 46665, 67779, 81069, 112965, 135115, 243207, 338895, 405345, 459391, 1216035, 1378173, 2296955, 4134519, 6890865, 20672595]

約数ペア:

[(1, 20672595), (3, 6890865), (5, 4134519), (9, 2296955), (15, 1378173), (17, 1216035), (45, 459391), (51, 405345), (61, 338895), (85, 243207), (153, 135115), (183, 112965), (255, 81069), (305, 67779), (443, 46665), (549, 37655), (765, 27023), (915, 22593), (1037, 19935), (1329, 15555), (2215, 9333), (2745, 7531), (3111, 6645), (3987, 5185)]