19914284

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:450

約数の個数: 36

約数和(自身を含む): 38276280

約数和(自身を除く): 18361996

約数列:

[1, 2, 4, 13, 26, 52, 89, 169, 178, 331, 338, 356, 662, 676, 1157, 1324, 2314, 4303, 4628, 8606, 15041, 17212, 29459, 30082, 55939, 58918, 60164, 111878, 117836, 223756, 382967, 765934, 1531868, 4978571, 9957142, 19914284]

約数ペア:

[(1, 19914284), (2, 9957142), (4, 4978571), (13, 1531868), (26, 765934), (52, 382967), (89, 223756), (169, 117836), (178, 111878), (331, 60164), (338, 58918), (356, 55939), (662, 30082), (676, 29459), (1157, 17212), (1324, 15041), (2314, 8606), (4303, 4628)]