28892420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 62678448

約数和(自身を除く): 33786028

約数列:

[1, 2, 4, 5, 10, 20, 53, 97, 106, 194, 212, 265, 281, 388, 485, 530, 562, 970, 1060, 1124, 1405, 1940, 2810, 5141, 5620, 10282, 14893, 20564, 25705, 27257, 29786, 51410, 54514, 59572, 74465, 102820, 109028, 136285, 148930, 272570, 297860, 545140, 1444621, 2889242, 5778484, 7223105, 14446210, 28892420]

約数ペア:

[(1, 28892420), (2, 14446210), (4, 7223105), (5, 5778484), (10, 2889242), (20, 1444621), (53, 545140), (97, 297860), (106, 272570), (194, 148930), (212, 136285), (265, 109028), (281, 102820), (388, 74465), (485, 59572), (530, 54514), (562, 51410), (970, 29786), (1060, 27257), (1124, 25705), (1405, 20564), (1940, 14893), (2810, 10282), (5141, 5620)]