20125860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{659}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 56548800

約数和(自身を除く): 36422940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 509, 659, 1018, 1318, 1527, 1977, 2036, 2545, 2636, 3054, 3295, 3954, 5090, 6108, 6590, 7635, 7908, 9885, 10180, 13180, 15270, 19770, 30540, 39540, 335431, 670862, 1006293, 1341724, 1677155, 2012586, 3354310, 4025172, 5031465, 6708620, 10062930, 20125860]

約数ペア:

[(1, 20125860), (2, 10062930), (3, 6708620), (4, 5031465), (5, 4025172), (6, 3354310), (10, 2012586), (12, 1677155), (15, 1341724), (20, 1006293), (30, 670862), (60, 335431), (509, 39540), (659, 30540), (1018, 19770), (1318, 15270), (1527, 13180), (1977, 10180), (2036, 9885), (2545, 7908), (2636, 7635), (3054, 6590), (3295, 6108), (3954, 5090)]