19400745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 38997504

約数和(自身を除く): 19596759

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 61, 65, 91, 105, 183, 195, 233, 273, 305, 427, 455, 699, 793, 915, 1165, 1281, 1365, 1631, 2135, 2379, 3029, 3495, 3965, 4893, 5551, 6405, 8155, 9087, 11895, 14213, 15145, 16653, 21203, 24465, 27755, 42639, 45435, 63609, 71065, 83265, 99491, 106015, 184769, 213195, 298473, 318045, 497455, 554307, 923845, 1293383, 1492365, 2771535, 3880149, 6466915, 19400745]

約数ペア:

[(1, 19400745), (3, 6466915), (5, 3880149), (7, 2771535), (13, 1492365), (15, 1293383), (21, 923845), (35, 554307), (39, 497455), (61, 318045), (65, 298473), (91, 213195), (105, 184769), (183, 106015), (195, 99491), (233, 83265), (273, 71065), (305, 63609), (427, 45435), (455, 42639), (699, 27755), (793, 24465), (915, 21203), (1165, 16653), (1281, 15145), (1365, 14213), (1631, 11895), (2135, 9087), (2379, 8155), (3029, 6405), (3495, 5551), (3965, 4893)]