19187140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4421}}^1$

素因数の和:4468

約数の個数: 48

約数和(自身を含む): 47545344

約数和(自身を除く): 28358204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4421, 8842, 17684, 22105, 30947, 44210, 61894, 88420, 123788, 137051, 154735, 274102, 309470, 548204, 618940, 685255, 959357, 1370510, 1918714, 2741020, 3837428, 4796785, 9593570, 19187140]

約数ペア:

[(1, 19187140), (2, 9593570), (4, 4796785), (5, 3837428), (7, 2741020), (10, 1918714), (14, 1370510), (20, 959357), (28, 685255), (31, 618940), (35, 548204), (62, 309470), (70, 274102), (124, 154735), (140, 137051), (155, 123788), (217, 88420), (310, 61894), (434, 44210), (620, 30947), (868, 22105), (1085, 17684), (2170, 8842), (4340, 4421)]