180021400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{69239}}^1$

素因数の和:69268

約数の個数: 48

約数和(自身を含む): 450752400

約数和(自身を除く): 270731000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 69239, 138478, 276956, 346195, 553912, 692390, 900107, 1384780, 1730975, 1800214, 2769560, 3461950, 3600428, 4500535, 6923900, 7200856, 9001070, 13847800, 18002140, 22502675, 36004280, 45005350, 90010700, 180021400]

約数ペア:

[(1, 180021400), (2, 90010700), (4, 45005350), (5, 36004280), (8, 22502675), (10, 18002140), (13, 13847800), (20, 9001070), (25, 7200856), (26, 6923900), (40, 4500535), (50, 3600428), (52, 3461950), (65, 2769560), (100, 1800214), (104, 1730975), (130, 1384780), (200, 900107), (260, 692390), (325, 553912), (520, 346195), (650, 276956), (1300, 138478), (2600, 69239)]