19862960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:366

約数の個数: 80

約数和(自身を含む): 50621760

約数和(自身を除く): 30758800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 269, 284, 355, 520, 538, 568, 710, 923, 1040, 1076, 1136, 1345, 1420, 1846, 2152, 2690, 2840, 3497, 3692, 4304, 4615, 5380, 5680, 6994, 7384, 9230, 10760, 13988, 14768, 17485, 18460, 19099, 21520, 27976, 34970, 36920, 38198, 55952, 69940, 73840, 76396, 95495, 139880, 152792, 190990, 248287, 279760, 305584, 381980, 496574, 763960, 993148, 1241435, 1527920, 1986296, 2482870, 3972592, 4965740, 9931480, 19862960]

約数ペア:

[(1, 19862960), (2, 9931480), (4, 4965740), (5, 3972592), (8, 2482870), (10, 1986296), (13, 1527920), (16, 1241435), (20, 993148), (26, 763960), (40, 496574), (52, 381980), (65, 305584), (71, 279760), (80, 248287), (104, 190990), (130, 152792), (142, 139880), (208, 95495), (260, 76396), (269, 73840), (284, 69940), (355, 55952), (520, 38198), (538, 36920), (568, 34970), (710, 27976), (923, 21520), (1040, 19099), (1076, 18460), (1136, 17485), (1345, 14768), (1420, 13988), (1846, 10760), (2152, 9230), (2690, 7384), (2840, 6994), (3497, 5680), (3692, 5380), (4304, 4615)]