19489500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 63370944

約数和(自身を除く): 43881444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 61, 71, 75, 90, 100, 122, 125, 142, 150, 180, 183, 213, 225, 244, 250, 284, 300, 305, 355, 366, 375, 426, 450, 500, 549, 610, 639, 710, 732, 750, 852, 900, 915, 1065, 1098, 1125, 1220, 1278, 1420, 1500, 1525, 1775, 1830, 2130, 2196, 2250, 2556, 2745, 3050, 3195, 3550, 3660, 4260, 4331, 4500, 4575, 5325, 5490, 6100, 6390, 7100, 7625, 8662, 8875, 9150, 10650, 10980, 12780, 12993, 13725, 15250, 15975, 17324, 17750, 18300, 21300, 21655, 22875, 25986, 26625, 27450, 30500, 31950, 35500, 38979, 43310, 45750, 51972, 53250, 54900, 63900, 64965, 68625, 77958, 79875, 86620, 91500, 106500, 108275, 129930, 137250, 155916, 159750, 194895, 216550, 259860, 274500, 319500, 324825, 389790, 433100, 541375, 649650, 779580, 974475, 1082750, 1299300, 1624125, 1948950, 2165500, 3248250, 3897900, 4872375, 6496500, 9744750, 19489500]

約数ペア:

[(1, 19489500), (2, 9744750), (3, 6496500), (4, 4872375), (5, 3897900), (6, 3248250), (9, 2165500), (10, 1948950), (12, 1624125), (15, 1299300), (18, 1082750), (20, 974475), (25, 779580), (30, 649650), (36, 541375), (45, 433100), (50, 389790), (60, 324825), (61, 319500), (71, 274500), (75, 259860), (90, 216550), (100, 194895), (122, 159750), (125, 155916), (142, 137250), (150, 129930), (180, 108275), (183, 106500), (213, 91500), (225, 86620), (244, 79875), (250, 77958), (284, 68625), (300, 64965), (305, 63900), (355, 54900), (366, 53250), (375, 51972), (426, 45750), (450, 43310), (500, 38979), (549, 35500), (610, 31950), (639, 30500), (710, 27450), (732, 26625), (750, 25986), (852, 22875), (900, 21655), (915, 21300), (1065, 18300), (1098, 17750), (1125, 17324), (1220, 15975), (1278, 15250), (1420, 13725), (1500, 12993), (1525, 12780), (1775, 10980), (1830, 10650), (2130, 9150), (2196, 8875), (2250, 8662), (2556, 7625), (2745, 7100), (3050, 6390), (3195, 6100), (3550, 5490), (3660, 5325), (4260, 4575), (4331, 4500)]