20163870

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 39555810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 23, 27, 30, 34, 45, 46, 51, 54, 69, 85, 90, 102, 115, 135, 138, 153, 170, 191, 207, 230, 255, 270, 306, 345, 382, 391, 414, 459, 510, 573, 621, 690, 765, 782, 918, 955, 1035, 1146, 1173, 1242, 1530, 1719, 1910, 1955, 2070, 2295, 2346, 2865, 3105, 3247, 3438, 3519, 3910, 4393, 4590, 5157, 5730, 5865, 6210, 6494, 7038, 8595, 8786, 9741, 10314, 10557, 11730, 13179, 16235, 17190, 17595, 19482, 21114, 21965, 25785, 26358, 29223, 32470, 35190, 39537, 43930, 48705, 51570, 52785, 58446, 65895, 74681, 79074, 87669, 97410, 105570, 118611, 131790, 146115, 149362, 175338, 197685, 224043, 237222, 292230, 373405, 395370, 438345, 448086, 593055, 672129, 746810, 876690, 1120215, 1186110, 1344258, 2016387, 2240430, 3360645, 4032774, 6721290, 10081935, 20163870]

約数ペア:

[(1, 20163870), (2, 10081935), (3, 6721290), (5, 4032774), (6, 3360645), (9, 2240430), (10, 2016387), (15, 1344258), (17, 1186110), (18, 1120215), (23, 876690), (27, 746810), (30, 672129), (34, 593055), (45, 448086), (46, 438345), (51, 395370), (54, 373405), (69, 292230), (85, 237222), (90, 224043), (102, 197685), (115, 175338), (135, 149362), (138, 146115), (153, 131790), (170, 118611), (191, 105570), (207, 97410), (230, 87669), (255, 79074), (270, 74681), (306, 65895), (345, 58446), (382, 52785), (391, 51570), (414, 48705), (459, 43930), (510, 39537), (573, 35190), (621, 32470), (690, 29223), (765, 26358), (782, 25785), (918, 21965), (955, 21114), (1035, 19482), (1146, 17595), (1173, 17190), (1242, 16235), (1530, 13179), (1719, 11730), (1910, 10557), (1955, 10314), (2070, 9741), (2295, 8786), (2346, 8595), (2865, 7038), (3105, 6494), (3247, 6210), (3438, 5865), (3519, 5730), (3910, 5157), (4393, 4590)]