19443320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 28184680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 269, 278, 520, 538, 556, 695, 1076, 1112, 1345, 1390, 1807, 2152, 2690, 2780, 3497, 3614, 5380, 5560, 6994, 7228, 9035, 10760, 13988, 14456, 17485, 18070, 27976, 34970, 36140, 37391, 69940, 72280, 74782, 139880, 149564, 186955, 299128, 373910, 486083, 747820, 972166, 1495640, 1944332, 2430415, 3888664, 4860830, 9721660, 19443320]

約数ペア:

[(1, 19443320), (2, 9721660), (4, 4860830), (5, 3888664), (8, 2430415), (10, 1944332), (13, 1495640), (20, 972166), (26, 747820), (40, 486083), (52, 373910), (65, 299128), (104, 186955), (130, 149564), (139, 139880), (260, 74782), (269, 72280), (278, 69940), (520, 37391), (538, 36140), (556, 34970), (695, 27976), (1076, 18070), (1112, 17485), (1345, 14456), (1390, 13988), (1807, 10760), (2152, 9035), (2690, 7228), (2780, 6994), (3497, 5560), (3614, 5380)]