20056715920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1\times {\mathrm{7229}}^1$

素因数の和:7760

約数の個数: 80

約数和(自身を含む): 47336256000

約数和(自身を除く): 27279540080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 439, 632, 790, 878, 1264, 1580, 1756, 2195, 3160, 3512, 4390, 6320, 7024, 7229, 8780, 14458, 17560, 28916, 34681, 35120, 36145, 57832, 69362, 72290, 115664, 138724, 144580, 173405, 277448, 289160, 346810, 554896, 571091, 578320, 693620, 1142182, 1387240, 2284364, 2774480, 2855455, 3173531, 4568728, 5710910, 6347062, 9137456, 11421820, 12694124, 15867655, 22843640, 25388248, 31735310, 45687280, 50776496, 63470620, 126941240, 250708949, 253882480, 501417898, 1002835796, 1253544745, 2005671592, 2507089490, 4011343184, 5014178980, 10028357960, 20056715920]

約数ペア:

[(1, 20056715920), (2, 10028357960), (4, 5014178980), (5, 4011343184), (8, 2507089490), (10, 2005671592), (16, 1253544745), (20, 1002835796), (40, 501417898), (79, 253882480), (80, 250708949), (158, 126941240), (316, 63470620), (395, 50776496), (439, 45687280), (632, 31735310), (790, 25388248), (878, 22843640), (1264, 15867655), (1580, 12694124), (1756, 11421820), (2195, 9137456), (3160, 6347062), (3512, 5710910), (4390, 4568728), (6320, 3173531), (7024, 2855455), (7229, 2774480), (8780, 2284364), (14458, 1387240), (17560, 1142182), (28916, 693620), (34681, 578320), (35120, 571091), (36145, 554896), (57832, 346810), (69362, 289160), (72290, 277448), (115664, 173405), (138724, 144580)]