19970930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:843

約数の個数: 48

約数和(自身を含む): 42661080

約数和(自身を除く): 22690150

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 53, 70, 98, 106, 245, 265, 371, 490, 530, 742, 769, 1538, 1855, 2597, 3710, 3845, 5194, 5383, 7690, 10766, 12985, 25970, 26915, 37681, 40757, 53830, 75362, 81514, 188405, 203785, 285299, 376810, 407570, 570598, 1426495, 1997093, 2852990, 3994186, 9985465, 19970930]

約数ペア:

[(1, 19970930), (2, 9985465), (5, 3994186), (7, 2852990), (10, 1997093), (14, 1426495), (35, 570598), (49, 407570), (53, 376810), (70, 285299), (98, 203785), (106, 188405), (245, 81514), (265, 75362), (371, 53830), (490, 40757), (530, 37681), (742, 26915), (769, 25970), (1538, 12985), (1855, 10766), (2597, 7690), (3710, 5383), (3845, 5194)]