19009918

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 31248000

約数和(自身を除く): 12238082

約数列:

[1, 2, 19, 38, 59, 61, 118, 122, 139, 278, 1121, 1159, 2242, 2318, 2641, 3599, 5282, 7198, 8201, 8479, 16402, 16958, 68381, 136762, 155819, 161101, 311638, 322202, 500261, 1000522, 9504959, 19009918]

約数ペア:

[(1, 19009918), (2, 9504959), (19, 1000522), (38, 500261), (59, 322202), (61, 311638), (118, 161101), (122, 155819), (139, 136762), (278, 68381), (1121, 16958), (1159, 16402), (2242, 8479), (2318, 8201), (2641, 7198), (3599, 5282)]