19975928

素因数分解:

$2^3\times 7^2\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 44015400

約数和(自身を除く): 24039472

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 131, 196, 262, 389, 392, 524, 778, 917, 1048, 1556, 1834, 2723, 3112, 3668, 5446, 6419, 7336, 10892, 12838, 19061, 21784, 25676, 38122, 50959, 51352, 76244, 101918, 152488, 203836, 356713, 407672, 713426, 1426852, 2496991, 2853704, 4993982, 9987964, 19975928]

約数ペア:

[(1, 19975928), (2, 9987964), (4, 4993982), (7, 2853704), (8, 2496991), (14, 1426852), (28, 713426), (49, 407672), (56, 356713), (98, 203836), (131, 152488), (196, 101918), (262, 76244), (389, 51352), (392, 50959), (524, 38122), (778, 25676), (917, 21784), (1048, 19061), (1556, 12838), (1834, 10892), (2723, 7336), (3112, 6419), (3668, 5446)]