20719600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1$

素因数の和:323

約数の個数: 120

約数和(自身を含む): 57706128

約数和(自身を除く): 36986528

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 25, 34, 40, 44, 50, 55, 68, 80, 85, 88, 100, 110, 136, 170, 176, 187, 200, 220, 272, 275, 277, 340, 374, 400, 425, 440, 550, 554, 680, 748, 850, 880, 935, 1100, 1108, 1360, 1385, 1496, 1700, 1870, 2200, 2216, 2770, 2992, 3047, 3400, 3740, 4400, 4432, 4675, 4709, 5540, 6094, 6800, 6925, 7480, 9350, 9418, 11080, 12188, 13850, 14960, 15235, 18700, 18836, 22160, 23545, 24376, 27700, 30470, 37400, 37672, 47090, 48752, 51799, 55400, 60940, 74800, 75344, 76175, 94180, 103598, 110800, 117725, 121880, 152350, 188360, 207196, 235450, 243760, 258995, 304700, 376720, 414392, 470900, 517990, 609400, 828784, 941800, 1035980, 1218800, 1294975, 1883600, 2071960, 2589950, 4143920, 5179900, 10359800, 20719600]

約数ペア:

[(1, 20719600), (2, 10359800), (4, 5179900), (5, 4143920), (8, 2589950), (10, 2071960), (11, 1883600), (16, 1294975), (17, 1218800), (20, 1035980), (22, 941800), (25, 828784), (34, 609400), (40, 517990), (44, 470900), (50, 414392), (55, 376720), (68, 304700), (80, 258995), (85, 243760), (88, 235450), (100, 207196), (110, 188360), (136, 152350), (170, 121880), (176, 117725), (187, 110800), (200, 103598), (220, 94180), (272, 76175), (275, 75344), (277, 74800), (340, 60940), (374, 55400), (400, 51799), (425, 48752), (440, 47090), (550, 37672), (554, 37400), (680, 30470), (748, 27700), (850, 24376), (880, 23545), (935, 22160), (1100, 18836), (1108, 18700), (1360, 15235), (1385, 14960), (1496, 13850), (1700, 12188), (1870, 11080), (2200, 9418), (2216, 9350), (2770, 7480), (2992, 6925), (3047, 6800), (3400, 6094), (3740, 5540), (4400, 4709), (4432, 4675)]