199907820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{158657}}^1$

素因数の和:158679

約数の個数: 72

約数和(自身を含む): 693018144

約数和(自身を除く): 493110324

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 158657, 317314, 475971, 634628, 793285, 951942, 1110599, 1427913, 1586570, 1903884, 2221198, 2379855, 2855826, 3173140, 3331797, 4442396, 4759710, 5552995, 5711652, 6663594, 7139565, 9519420, 9995391, 11105990, 13327188, 14279130, 16658985, 19990782, 22211980, 28558260, 33317970, 39981564, 49976955, 66635940, 99953910, 199907820]

約数ペア:

[(1, 199907820), (2, 99953910), (3, 66635940), (4, 49976955), (5, 39981564), (6, 33317970), (7, 28558260), (9, 22211980), (10, 19990782), (12, 16658985), (14, 14279130), (15, 13327188), (18, 11105990), (20, 9995391), (21, 9519420), (28, 7139565), (30, 6663594), (35, 5711652), (36, 5552995), (42, 4759710), (45, 4442396), (60, 3331797), (63, 3173140), (70, 2855826), (84, 2379855), (90, 2221198), (105, 1903884), (126, 1586570), (140, 1427913), (180, 1110599), (210, 951942), (252, 793285), (315, 634628), (420, 475971), (630, 317314), (1260, 158657)]