19299980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4447}}^1$

素因数の和:4494

約数の個数: 48

約数和(自身を含む): 47824896

約数和(自身を除く): 28524916

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, 4447, 8894, 17788, 22235, 31129, 44470, 62258, 88940, 124516, 137857, 155645, 275714, 311290, 551428, 622580, 689285, 964999, 1378570, 1929998, 2757140, 3859996, 4824995, 9649990, 19299980]

約数ペア:

[(1, 19299980), (2, 9649990), (4, 4824995), (5, 3859996), (7, 2757140), (10, 1929998), (14, 1378570), (20, 964999), (28, 689285), (31, 622580), (35, 551428), (62, 311290), (70, 275714), (124, 155645), (140, 137857), (155, 124516), (217, 88940), (310, 62258), (434, 44470), (620, 31129), (868, 22235), (1085, 17788), (2170, 8894), (4340, 4447)]