21103412980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7901}}^1\times {\mathrm{10273}}^1$

素因数の和:18196

約数の個数: 48

約数和(自身を含む): 47736867024

約数和(自身を除く): 26633454044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7901, 10273, 15802, 20546, 31604, 39505, 41092, 51365, 79010, 102713, 102730, 133549, 158020, 205426, 205460, 267098, 410852, 513565, 534196, 667745, 1027130, 1335490, 2054260, 2670980, 81166973, 162333946, 324667892, 405834865, 811669730, 1055170649, 1623339460, 2110341298, 4220682596, 5275853245, 10551706490, 21103412980]

約数ペア:

[(1, 21103412980), (2, 10551706490), (4, 5275853245), (5, 4220682596), (10, 2110341298), (13, 1623339460), (20, 1055170649), (26, 811669730), (52, 405834865), (65, 324667892), (130, 162333946), (260, 81166973), (7901, 2670980), (10273, 2054260), (15802, 1335490), (20546, 1027130), (31604, 667745), (39505, 534196), (41092, 513565), (51365, 410852), (79010, 267098), (102713, 205460), (102730, 205426), (133549, 158020)]