21458372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 43794240

約数和(自身を除く): 22335868

約数列:

[1, 2, 4, 13, 19, 26, 37, 38, 52, 74, 76, 148, 247, 481, 494, 587, 703, 962, 988, 1174, 1406, 1924, 2348, 2812, 7631, 9139, 11153, 15262, 18278, 21719, 22306, 30524, 36556, 43438, 44612, 86876, 144989, 282347, 289978, 412661, 564694, 579956, 825322, 1129388, 1650644, 5364593, 10729186, 21458372]

約数ペア:

[(1, 21458372), (2, 10729186), (4, 5364593), (13, 1650644), (19, 1129388), (26, 825322), (37, 579956), (38, 564694), (52, 412661), (74, 289978), (76, 282347), (148, 144989), (247, 86876), (481, 44612), (494, 43438), (587, 36556), (703, 30524), (962, 22306), (988, 21719), (1174, 18278), (1406, 15262), (1924, 11153), (2348, 9139), (2812, 7631)]