19786832

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{379}}^1$

素因数の和:651

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 21773008

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 251, 379, 502, 758, 1004, 1516, 2008, 3032, 3263, 4016, 4927, 6064, 6526, 9854, 13052, 19708, 26104, 39416, 52208, 78832, 95129, 190258, 380516, 761032, 1236677, 1522064, 2473354, 4946708, 9893416, 19786832]

約数ペア:

[(1, 19786832), (2, 9893416), (4, 4946708), (8, 2473354), (13, 1522064), (16, 1236677), (26, 761032), (52, 380516), (104, 190258), (208, 95129), (251, 78832), (379, 52208), (502, 39416), (758, 26104), (1004, 19708), (1516, 13052), (2008, 9854), (3032, 6526), (3263, 6064), (4016, 4927)]