21360955

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:627

約数の個数: 32

約数和(自身を含む): 32306688

約数和(自身を除く): 10945733

約数列:

[1, 5, 7, 11, 35, 55, 77, 113, 385, 491, 565, 791, 1243, 2455, 3437, 3955, 5401, 6215, 8701, 17185, 27005, 37807, 43505, 55483, 189035, 277415, 388381, 610313, 1941905, 3051565, 4272191, 21360955]

約数ペア:

[(1, 21360955), (5, 4272191), (7, 3051565), (11, 1941905), (35, 610313), (55, 388381), (77, 277415), (113, 189035), (385, 55483), (491, 43505), (565, 37807), (791, 27005), (1243, 17185), (2455, 8701), (3437, 6215), (3955, 5401)]