81961725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 144187200

約数和(自身を除く): 62225475

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 113, 285, 339, 475, 509, 565, 1425, 1527, 1695, 2147, 2545, 2825, 6441, 7635, 8475, 9671, 10735, 12725, 29013, 32205, 38175, 48355, 53675, 57517, 145065, 161025, 172551, 241775, 287585, 725325, 862755, 1092823, 1437925, 3278469, 4313775, 5464115, 16392345, 27320575, 81961725]

約数ペア:

[(1, 81961725), (3, 27320575), (5, 16392345), (15, 5464115), (19, 4313775), (25, 3278469), (57, 1437925), (75, 1092823), (95, 862755), (113, 725325), (285, 287585), (339, 241775), (475, 172551), (509, 161025), (565, 145065), (1425, 57517), (1527, 53675), (1695, 48355), (2147, 38175), (2545, 32205), (2825, 29013), (6441, 12725), (7635, 10735), (8475, 9671)]