20327702980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{278233}}^1$

素因数の和:278536

約数の個数: 48

約数和(自身を含む): 46135648944

約数和(自身を除く): 25807945964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 281, 562, 1124, 1405, 2810, 3653, 5620, 7306, 14612, 18265, 36530, 73060, 278233, 556466, 1112932, 1391165, 2782330, 3617029, 5564660, 7234058, 14468116, 18085145, 36170290, 72340580, 78183473, 156366946, 312733892, 390917365, 781834730, 1016385149, 1563669460, 2032770298, 4065540596, 5081925745, 10163851490, 20327702980]

約数ペア:

[(1, 20327702980), (2, 10163851490), (4, 5081925745), (5, 4065540596), (10, 2032770298), (13, 1563669460), (20, 1016385149), (26, 781834730), (52, 390917365), (65, 312733892), (130, 156366946), (260, 78183473), (281, 72340580), (562, 36170290), (1124, 18085145), (1405, 14468116), (2810, 7234058), (3653, 5564660), (5620, 3617029), (7306, 2782330), (14612, 1391165), (18265, 1112932), (36530, 556466), (73060, 278233)]