18519795

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 38520144

約数和(自身を除く): 20000349

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 37, 45, 49, 63, 105, 111, 147, 185, 227, 245, 259, 315, 333, 441, 555, 681, 735, 777, 1135, 1295, 1589, 1665, 1813, 2043, 2205, 2331, 3405, 3885, 4767, 5439, 7945, 8399, 9065, 10215, 11123, 11655, 14301, 16317, 23835, 25197, 27195, 33369, 41995, 55615, 58793, 71505, 75591, 81585, 100107, 125985, 166845, 176379, 293965, 377955, 411551, 500535, 529137, 881895, 1234653, 2057755, 2645685, 3703959, 6173265, 18519795]

約数ペア:

[(1, 18519795), (3, 6173265), (5, 3703959), (7, 2645685), (9, 2057755), (15, 1234653), (21, 881895), (35, 529137), (37, 500535), (45, 411551), (49, 377955), (63, 293965), (105, 176379), (111, 166845), (147, 125985), (185, 100107), (227, 81585), (245, 75591), (259, 71505), (315, 58793), (333, 55615), (441, 41995), (555, 33369), (681, 27195), (735, 25197), (777, 23835), (1135, 16317), (1295, 14301), (1589, 11655), (1665, 11123), (1813, 10215), (2043, 9065), (2205, 8399), (2331, 7945), (3405, 5439), (3885, 4767)]