16489720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1669}}^1$

素因数の和:1712

約数の個数: 64

約数和(自身を含む): 42084000

約数和(自身を除く): 25594280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1669, 1976, 2470, 3338, 4940, 6676, 8345, 9880, 13352, 16690, 21697, 31711, 33380, 43394, 63422, 66760, 86788, 108485, 126844, 158555, 173576, 216970, 253688, 317110, 412243, 433940, 634220, 824486, 867880, 1268440, 1648972, 2061215, 3297944, 4122430, 8244860, 16489720]

約数ペア:

[(1, 16489720), (2, 8244860), (4, 4122430), (5, 3297944), (8, 2061215), (10, 1648972), (13, 1268440), (19, 867880), (20, 824486), (26, 634220), (38, 433940), (40, 412243), (52, 317110), (65, 253688), (76, 216970), (95, 173576), (104, 158555), (130, 126844), (152, 108485), (190, 86788), (247, 66760), (260, 63422), (380, 43394), (494, 33380), (520, 31711), (760, 21697), (988, 16690), (1235, 13352), (1669, 9880), (1976, 8345), (2470, 6676), (3338, 4940)]