209774860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{2347}}^1$

素因数の和:2506

約数の個数: 48

約数和(自身を含む): 455605920

約数和(自身を除く): 245831060

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 820, 1090, 2180, 2347, 4469, 4694, 8938, 9388, 11735, 17876, 22345, 23470, 44690, 46940, 89380, 96227, 192454, 255823, 384908, 481135, 511646, 962270, 1023292, 1279115, 1924540, 2558230, 5116460, 10488743, 20977486, 41954972, 52443715, 104887430, 209774860]

約数ペア:

[(1, 209774860), (2, 104887430), (4, 52443715), (5, 41954972), (10, 20977486), (20, 10488743), (41, 5116460), (82, 2558230), (109, 1924540), (164, 1279115), (205, 1023292), (218, 962270), (410, 511646), (436, 481135), (545, 384908), (820, 255823), (1090, 192454), (2180, 96227), (2347, 89380), (4469, 46940), (4694, 44690), (8938, 23470), (9388, 22345), (11735, 17876)]