7844720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:442

約数の個数: 80

約数和(自身を含む): 20727840

約数和(自身を除く): 12883120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 397, 494, 520, 760, 794, 988, 1040, 1235, 1520, 1588, 1976, 1985, 2470, 3176, 3952, 3970, 4940, 5161, 6352, 7543, 7940, 9880, 10322, 15086, 15880, 19760, 20644, 25805, 30172, 31760, 37715, 41288, 51610, 60344, 75430, 82576, 98059, 103220, 120688, 150860, 196118, 206440, 301720, 392236, 412880, 490295, 603440, 784472, 980590, 1568944, 1961180, 3922360, 7844720]

約数ペア:

[(1, 7844720), (2, 3922360), (4, 1961180), (5, 1568944), (8, 980590), (10, 784472), (13, 603440), (16, 490295), (19, 412880), (20, 392236), (26, 301720), (38, 206440), (40, 196118), (52, 150860), (65, 120688), (76, 103220), (80, 98059), (95, 82576), (104, 75430), (130, 60344), (152, 51610), (190, 41288), (208, 37715), (247, 31760), (260, 30172), (304, 25805), (380, 20644), (397, 19760), (494, 15880), (520, 15086), (760, 10322), (794, 9880), (988, 7940), (1040, 7543), (1235, 6352), (1520, 5161), (1588, 4940), (1976, 3970), (1985, 3952), (2470, 3176)]