18905880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 65940480

約数和(自身を除く): 47034600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 71, 84, 105, 120, 140, 142, 168, 210, 213, 280, 284, 317, 355, 420, 426, 497, 568, 634, 710, 840, 852, 951, 994, 1065, 1268, 1420, 1491, 1585, 1704, 1902, 1988, 2130, 2219, 2485, 2536, 2840, 2982, 3170, 3804, 3976, 4260, 4438, 4755, 4970, 5964, 6340, 6657, 7455, 7608, 8520, 8876, 9510, 9940, 11095, 11928, 12680, 13314, 14910, 17752, 19020, 19880, 22190, 22507, 26628, 29820, 33285, 38040, 44380, 45014, 53256, 59640, 66570, 67521, 88760, 90028, 112535, 133140, 135042, 157549, 180056, 225070, 266280, 270084, 315098, 337605, 450140, 472647, 540168, 630196, 675210, 787745, 900280, 945294, 1260392, 1350420, 1575490, 1890588, 2363235, 2700840, 3150980, 3781176, 4726470, 6301960, 9452940, 18905880]

約数ペア:

[(1, 18905880), (2, 9452940), (3, 6301960), (4, 4726470), (5, 3781176), (6, 3150980), (7, 2700840), (8, 2363235), (10, 1890588), (12, 1575490), (14, 1350420), (15, 1260392), (20, 945294), (21, 900280), (24, 787745), (28, 675210), (30, 630196), (35, 540168), (40, 472647), (42, 450140), (56, 337605), (60, 315098), (70, 270084), (71, 266280), (84, 225070), (105, 180056), (120, 157549), (140, 135042), (142, 133140), (168, 112535), (210, 90028), (213, 88760), (280, 67521), (284, 66570), (317, 59640), (355, 53256), (420, 45014), (426, 44380), (497, 38040), (568, 33285), (634, 29820), (710, 26628), (840, 22507), (852, 22190), (951, 19880), (994, 19020), (1065, 17752), (1268, 14910), (1420, 13314), (1491, 12680), (1585, 11928), (1704, 11095), (1902, 9940), (1988, 9510), (2130, 8876), (2219, 8520), (2485, 7608), (2536, 7455), (2840, 6657), (2982, 6340), (3170, 5964), (3804, 4970), (3976, 4755), (4260, 4438)]