21780962

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 38704512

約数和(自身を除く): 16923550

約数列:

[1, 2, 7, 14, 43, 86, 97, 194, 301, 373, 602, 679, 746, 1358, 2611, 4171, 5222, 8342, 16039, 29197, 32078, 36181, 58394, 72362, 112273, 224546, 253267, 506534, 1555783, 3111566, 10890481, 21780962]

約数ペア:

[(1, 21780962), (2, 10890481), (7, 3111566), (14, 1555783), (43, 506534), (86, 253267), (97, 224546), (194, 112273), (301, 72362), (373, 58394), (602, 36181), (679, 32078), (746, 29197), (1358, 16039), (2611, 8342), (4171, 5222)]