20389300

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4973}}^1$

素因数の和:5028

約数の個数: 36

約数和(自身を含む): 45333036

約数和(自身を除く): 24943736

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4973, 9946, 19892, 24865, 49730, 99460, 124325, 203893, 248650, 407786, 497300, 815572, 1019465, 2038930, 4077860, 5097325, 10194650, 20389300]

約数ペア:

[(1, 20389300), (2, 10194650), (4, 5097325), (5, 4077860), (10, 2038930), (20, 1019465), (25, 815572), (41, 497300), (50, 407786), (82, 248650), (100, 203893), (164, 124325), (205, 99460), (410, 49730), (820, 24865), (1025, 19892), (2050, 9946), (4100, 4973)]