19179940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1039}}^1$

素因数の和:1132

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 24849500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1039, 1420, 1846, 2078, 3692, 4156, 4615, 5195, 9230, 10390, 13507, 18460, 20780, 27014, 54028, 67535, 73769, 135070, 147538, 270140, 295076, 368845, 737690, 958997, 1475380, 1917994, 3835988, 4794985, 9589970, 19179940]

約数ペア:

[(1, 19179940), (2, 9589970), (4, 4794985), (5, 3835988), (10, 1917994), (13, 1475380), (20, 958997), (26, 737690), (52, 368845), (65, 295076), (71, 270140), (130, 147538), (142, 135070), (260, 73769), (284, 67535), (355, 54028), (710, 27014), (923, 20780), (1039, 18460), (1420, 13507), (1846, 10390), (2078, 9230), (3692, 5195), (4156, 4615)]