172431980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{701}}^1$

素因数の和:975

約数の個数: 72

約数和(自身を含む): 423508176

約数和(自身を除く): 251076196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 251, 490, 502, 701, 980, 1004, 1255, 1402, 1757, 2510, 2804, 3505, 3514, 4907, 5020, 7010, 7028, 8785, 9814, 12299, 14020, 17570, 19628, 24535, 24598, 34349, 35140, 49070, 49196, 61495, 68698, 98140, 122990, 137396, 171745, 175951, 245980, 343490, 351902, 686980, 703804, 879755, 1231657, 1759510, 2463314, 3519020, 4926628, 6158285, 8621599, 12316570, 17243198, 24633140, 34486396, 43107995, 86215990, 172431980]

約数ペア:

[(1, 172431980), (2, 86215990), (4, 43107995), (5, 34486396), (7, 24633140), (10, 17243198), (14, 12316570), (20, 8621599), (28, 6158285), (35, 4926628), (49, 3519020), (70, 2463314), (98, 1759510), (140, 1231657), (196, 879755), (245, 703804), (251, 686980), (490, 351902), (502, 343490), (701, 245980), (980, 175951), (1004, 171745), (1255, 137396), (1402, 122990), (1757, 98140), (2510, 68698), (2804, 61495), (3505, 49196), (3514, 49070), (4907, 35140), (5020, 34349), (7010, 24598), (7028, 24535), (8785, 19628), (9814, 17570), (12299, 14020)]