21763664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5507}}^1$

素因数の和:5547

約数の個数: 40

約数和(自身を含む): 47809440

約数和(自身を除く): 26045776

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5507, 11014, 22028, 44056, 71591, 88112, 104633, 143182, 209266, 286364, 418532, 572728, 837064, 1145456, 1360229, 1674128, 2720458, 5440916, 10881832, 21763664]

約数ペア:

[(1, 21763664), (2, 10881832), (4, 5440916), (8, 2720458), (13, 1674128), (16, 1360229), (19, 1145456), (26, 837064), (38, 572728), (52, 418532), (76, 286364), (104, 209266), (152, 143182), (208, 104633), (247, 88112), (304, 71591), (494, 44056), (988, 22028), (1976, 11014), (3952, 5507)]