19444880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2671}}^1$

素因数の和:2704

約数の個数: 80

約数和(自身を含む): 55663104

約数和(自身を除く): 36218224

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2671, 3640, 5342, 7280, 10684, 13355, 18697, 21368, 26710, 34723, 37394, 42736, 53420, 69446, 74788, 93485, 106840, 138892, 149576, 173615, 186970, 213680, 243061, 277784, 299152, 347230, 373940, 486122, 555568, 694460, 747880, 972244, 1215305, 1388920, 1495760, 1944488, 2430610, 2777840, 3888976, 4861220, 9722440, 19444880]

約数ペア:

[(1, 19444880), (2, 9722440), (4, 4861220), (5, 3888976), (7, 2777840), (8, 2430610), (10, 1944488), (13, 1495760), (14, 1388920), (16, 1215305), (20, 972244), (26, 747880), (28, 694460), (35, 555568), (40, 486122), (52, 373940), (56, 347230), (65, 299152), (70, 277784), (80, 243061), (91, 213680), (104, 186970), (112, 173615), (130, 149576), (140, 138892), (182, 106840), (208, 93485), (260, 74788), (280, 69446), (364, 53420), (455, 42736), (520, 37394), (560, 34723), (728, 26710), (910, 21368), (1040, 18697), (1456, 13355), (1820, 10684), (2671, 7280), (3640, 5342)]