18876060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 66673152

約数和(自身を除く): 47797092

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 211, 213, 252, 284, 315, 355, 420, 422, 426, 497, 630, 633, 639, 710, 844, 852, 994, 1055, 1065, 1260, 1266, 1278, 1420, 1477, 1491, 1899, 1988, 2110, 2130, 2485, 2532, 2556, 2954, 2982, 3165, 3195, 3798, 4220, 4260, 4431, 4473, 4970, 5908, 5964, 6330, 6390, 7385, 7455, 7596, 8862, 8946, 9495, 9940, 12660, 12780, 13293, 14770, 14910, 14981, 17724, 17892, 18990, 22155, 22365, 26586, 29540, 29820, 29962, 37980, 44310, 44730, 44943, 53172, 59924, 66465, 74905, 88620, 89460, 89886, 104867, 132930, 134829, 149810, 179772, 209734, 224715, 265860, 269658, 299620, 314601, 419468, 449430, 524335, 539316, 629202, 674145, 898860, 943803, 1048670, 1258404, 1348290, 1573005, 1887606, 2097340, 2696580, 3146010, 3775212, 4719015, 6292020, 9438030, 18876060]

約数ペア:

[(1, 18876060), (2, 9438030), (3, 6292020), (4, 4719015), (5, 3775212), (6, 3146010), (7, 2696580), (9, 2097340), (10, 1887606), (12, 1573005), (14, 1348290), (15, 1258404), (18, 1048670), (20, 943803), (21, 898860), (28, 674145), (30, 629202), (35, 539316), (36, 524335), (42, 449430), (45, 419468), (60, 314601), (63, 299620), (70, 269658), (71, 265860), (84, 224715), (90, 209734), (105, 179772), (126, 149810), (140, 134829), (142, 132930), (180, 104867), (210, 89886), (211, 89460), (213, 88620), (252, 74905), (284, 66465), (315, 59924), (355, 53172), (420, 44943), (422, 44730), (426, 44310), (497, 37980), (630, 29962), (633, 29820), (639, 29540), (710, 26586), (844, 22365), (852, 22155), (994, 18990), (1055, 17892), (1065, 17724), (1260, 14981), (1266, 14910), (1278, 14770), (1420, 13293), (1477, 12780), (1491, 12660), (1899, 9940), (1988, 9495), (2110, 8946), (2130, 8862), (2485, 7596), (2532, 7455), (2556, 7385), (2954, 6390), (2982, 6330), (3165, 5964), (3195, 5908), (3798, 4970), (4220, 4473), (4260, 4431)]