21786350

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 45921168

約数和(自身を除く): 24134818

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 71, 85, 95, 142, 170, 190, 323, 355, 361, 425, 475, 646, 710, 722, 850, 950, 1207, 1349, 1615, 1775, 1805, 2414, 2698, 3230, 3550, 3610, 6035, 6137, 6745, 8075, 9025, 12070, 12274, 13490, 16150, 18050, 22933, 25631, 30175, 30685, 33725, 45866, 51262, 60350, 61370, 67450, 114665, 128155, 153425, 229330, 256310, 306850, 435727, 573325, 640775, 871454, 1146650, 1281550, 2178635, 4357270, 10893175, 21786350]

約数ペア:

[(1, 21786350), (2, 10893175), (5, 4357270), (10, 2178635), (17, 1281550), (19, 1146650), (25, 871454), (34, 640775), (38, 573325), (50, 435727), (71, 306850), (85, 256310), (95, 229330), (142, 153425), (170, 128155), (190, 114665), (323, 67450), (355, 61370), (361, 60350), (425, 51262), (475, 45866), (646, 33725), (710, 30685), (722, 30175), (850, 25631), (950, 22933), (1207, 18050), (1349, 16150), (1615, 13490), (1775, 12274), (1805, 12070), (2414, 9025), (2698, 8075), (3230, 6745), (3550, 6137), (3610, 6035)]