19755645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 39965184

約数和(自身を除く): 20209539

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 41, 65, 91, 105, 123, 195, 205, 273, 287, 353, 455, 533, 615, 861, 1059, 1365, 1435, 1599, 1765, 2471, 2665, 3731, 4305, 4589, 5295, 7413, 7995, 11193, 12355, 13767, 14473, 18655, 22945, 32123, 37065, 43419, 55965, 68835, 72365, 96369, 101311, 160615, 188149, 217095, 303933, 481845, 506555, 564447, 940745, 1317043, 1519665, 2822235, 3951129, 6585215, 19755645]

約数ペア:

[(1, 19755645), (3, 6585215), (5, 3951129), (7, 2822235), (13, 1519665), (15, 1317043), (21, 940745), (35, 564447), (39, 506555), (41, 481845), (65, 303933), (91, 217095), (105, 188149), (123, 160615), (195, 101311), (205, 96369), (273, 72365), (287, 68835), (353, 55965), (455, 43419), (533, 37065), (615, 32123), (861, 22945), (1059, 18655), (1365, 14473), (1435, 13767), (1599, 12355), (1765, 11193), (2471, 7995), (2665, 7413), (3731, 5295), (4305, 4589)]