20521530

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2131}}^1$

素因数の和:2251

約数の個数: 48

約数和(自身を含む): 53879904

約数和(自身を除く): 33358374

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 107, 214, 321, 535, 642, 963, 1070, 1605, 1926, 2131, 3210, 4262, 4815, 6393, 9630, 10655, 12786, 19179, 21310, 31965, 38358, 63930, 95895, 191790, 228017, 456034, 684051, 1140085, 1368102, 2052153, 2280170, 3420255, 4104306, 6840510, 10260765, 20521530]

約数ペア:

[(1, 20521530), (2, 10260765), (3, 6840510), (5, 4104306), (6, 3420255), (9, 2280170), (10, 2052153), (15, 1368102), (18, 1140085), (30, 684051), (45, 456034), (90, 228017), (107, 191790), (214, 95895), (321, 63930), (535, 38358), (642, 31965), (963, 21310), (1070, 19179), (1605, 12786), (1926, 10655), (2131, 9630), (3210, 6393), (4262, 4815)]