19916416

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{11969}}^1$

素因数の和:11996

約数の個数: 32

約数和(自身を含む): 42732900

約数和(自身を除く): 22816484

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 11969, 23938, 47876, 95752, 155597, 191504, 311194, 383008, 622388, 766016, 1244776, 1532032, 2489552, 4979104, 9958208, 19916416]

約数ペア:

[(1, 19916416), (2, 9958208), (4, 4979104), (8, 2489552), (13, 1532032), (16, 1244776), (26, 766016), (32, 622388), (52, 383008), (64, 311194), (104, 191504), (128, 155597), (208, 95752), (416, 47876), (832, 23938), (1664, 11969)]