20423970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1944

約数の個数: 96

約数和(自身を含む): 64291968

約数和(自身を除く): 43867998

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 30, 34, 35, 42, 45, 51, 63, 70, 85, 90, 102, 105, 119, 126, 153, 170, 210, 238, 255, 306, 315, 357, 510, 595, 630, 714, 765, 1071, 1190, 1530, 1785, 1907, 2142, 3570, 3814, 5355, 5721, 9535, 10710, 11442, 13349, 17163, 19070, 26698, 28605, 32419, 34326, 40047, 57210, 64838, 66745, 80094, 85815, 97257, 120141, 133490, 162095, 171630, 194514, 200235, 226933, 240282, 291771, 324190, 400470, 453866, 486285, 583542, 600705, 680799, 972570, 1134665, 1201410, 1361598, 1458855, 2042397, 2269330, 2917710, 3403995, 4084794, 6807990, 10211985, 20423970]

約数ペア:

[(1, 20423970), (2, 10211985), (3, 6807990), (5, 4084794), (6, 3403995), (7, 2917710), (9, 2269330), (10, 2042397), (14, 1458855), (15, 1361598), (17, 1201410), (18, 1134665), (21, 972570), (30, 680799), (34, 600705), (35, 583542), (42, 486285), (45, 453866), (51, 400470), (63, 324190), (70, 291771), (85, 240282), (90, 226933), (102, 200235), (105, 194514), (119, 171630), (126, 162095), (153, 133490), (170, 120141), (210, 97257), (238, 85815), (255, 80094), (306, 66745), (315, 64838), (357, 57210), (510, 40047), (595, 34326), (630, 32419), (714, 28605), (765, 26698), (1071, 19070), (1190, 17163), (1530, 13349), (1785, 11442), (1907, 10710), (2142, 9535), (3570, 5721), (3814, 5355)]