19005220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1091}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 43662528

約数和(自身を除く): 24657308

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1091, 1340, 1742, 2182, 3484, 4355, 4364, 5455, 8710, 10910, 14183, 17420, 21820, 28366, 56732, 70915, 73097, 141830, 146194, 283660, 292388, 365485, 730970, 950261, 1461940, 1900522, 3801044, 4751305, 9502610, 19005220]

約数ペア:

[(1, 19005220), (2, 9502610), (4, 4751305), (5, 3801044), (10, 1900522), (13, 1461940), (20, 950261), (26, 730970), (52, 365485), (65, 292388), (67, 283660), (130, 146194), (134, 141830), (260, 73097), (268, 70915), (335, 56732), (670, 28366), (871, 21820), (1091, 17420), (1340, 14183), (1742, 10910), (2182, 8710), (3484, 5455), (4355, 4364)]