19884795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18822405

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 41, 93, 105, 123, 149, 155, 205, 217, 287, 447, 465, 615, 651, 745, 861, 1043, 1085, 1271, 1435, 2235, 3129, 3255, 3813, 4305, 4619, 5215, 6109, 6355, 8897, 13857, 15645, 18327, 19065, 23095, 26691, 30545, 32333, 42763, 44485, 69285, 91635, 96999, 128289, 133455, 161665, 189379, 213815, 484995, 568137, 641445, 946895, 1325653, 2840685, 3976959, 6628265, 19884795]

約数ペア:

[(1, 19884795), (3, 6628265), (5, 3976959), (7, 2840685), (15, 1325653), (21, 946895), (31, 641445), (35, 568137), (41, 484995), (93, 213815), (105, 189379), (123, 161665), (149, 133455), (155, 128289), (205, 96999), (217, 91635), (287, 69285), (447, 44485), (465, 42763), (615, 32333), (651, 30545), (745, 26691), (861, 23095), (1043, 19065), (1085, 18327), (1271, 15645), (1435, 13857), (2235, 8897), (3129, 6355), (3255, 6109), (3813, 5215), (4305, 4619)]