21490830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2683}}^1$

素因数の和:2785

約数の個数: 48

約数和(自身を含む): 56525040

約数和(自身を除く): 35034210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 89, 90, 178, 267, 445, 534, 801, 890, 1335, 1602, 2670, 2683, 4005, 5366, 8010, 8049, 13415, 16098, 24147, 26830, 40245, 48294, 80490, 120735, 238787, 241470, 477574, 716361, 1193935, 1432722, 2149083, 2387870, 3581805, 4298166, 7163610, 10745415, 21490830]

約数ペア:

[(1, 21490830), (2, 10745415), (3, 7163610), (5, 4298166), (6, 3581805), (9, 2387870), (10, 2149083), (15, 1432722), (18, 1193935), (30, 716361), (45, 477574), (89, 241470), (90, 238787), (178, 120735), (267, 80490), (445, 48294), (534, 40245), (801, 26830), (890, 24147), (1335, 16098), (1602, 13415), (2670, 8049), (2683, 8010), (4005, 5366)]