21625724

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 42040320

約数和(自身を除く): 20414596

約数列:

[1, 2, 4, 19, 31, 38, 62, 67, 76, 124, 134, 137, 268, 274, 548, 589, 1178, 1273, 2077, 2356, 2546, 2603, 4154, 4247, 5092, 5206, 8308, 8494, 9179, 10412, 16988, 18358, 36716, 39463, 78926, 80693, 157852, 161386, 174401, 284549, 322772, 348802, 569098, 697604, 1138196, 5406431, 10812862, 21625724]

約数ペア:

[(1, 21625724), (2, 10812862), (4, 5406431), (19, 1138196), (31, 697604), (38, 569098), (62, 348802), (67, 322772), (76, 284549), (124, 174401), (134, 161386), (137, 157852), (268, 80693), (274, 78926), (548, 39463), (589, 36716), (1178, 18358), (1273, 16988), (2077, 10412), (2356, 9179), (2546, 8494), (2603, 8308), (4154, 5206), (4247, 5092)]